JURNAL ILMIAH Judul Jurnal Ilmiah (Artikel) : Effect of

(1)

LEMBAR

HASIL PENILAIAN SEJAWAT SEBIDANG ATAU PEER REVIEW KARYA ILMIAH : JURNAL ILMIAH

Judul Jurnal Ilmiah (Artikel) : Effect of particle size and bed height on the characteristic of a fluidized bed dryer Jumlah Penulis : 6 orang (Eflita Yohana, Muchammad, Mohammad Tauviqirrahman, Awallina Ani

Sayekti, Kwang-Hwan Choi, and Vita Paramita) Status Pengusul : penulis Ke-1 (Bukan Penulis Korespondensi) Identitas Jurnal Ilmiah : a. Nama Jurnal : Cogent Engineering

b. Nomor ISSN : 2331-1916

c. Vol, No., Bln Thn : Volume 7, Issue 1 (2020)

d. Penerbit : Cogent OA

e. DOI artikel (jika ada) : https://doi.org/10.1080/23311916.2020.1738185 f. Alamat web jurnal : https://www.tandfonline.com/doi/full/10.1080/2331191

6.2020.1738185

Alamat Artikel : https://www.tandfonline.com/doi/epub/10.1080/2331191 6.2020.1738185?needAccess=true

g. Terindex : Scopus, Q2

Kategori Publikasi Jurnal Ilmiah :

√

Jurnal Ilmiah Internasional

(beri

pada kategori yang tepat)

Jurnal Ilmiah Nasional Terakreditasi Jurnal Ilmiah Nasional Tidak Terakreditasi Hasil Penilaian Peer Review :

Komponen Yang Dinilai

Nilai Reviewer

Nilai Rata-rata Reviewer I Reviewer II

a. Kelengkapan unsur isi jurnal (10%) 3,50 3,00 3,25

b. Ruang lingkup dan kedalaman pembahasan (30%) 11,00 11,50 11,25

c. Kecukupan dan kemutahiran data/informasi dan metodologi (30%)

11,50 11,00 11,25

d. Kelengkapan unsur dan kualitas terbitan/jurnal (30%) 11,00 11,00 11,00

Total = (100%) 37,00 36,50 36,75

Nilai Pengusul = (40% x 36,75) = 14,70

Semarang, Reviewer 2

Prof.Dr.rer.nat. Ir. A. P. Bayuseno, M.Sc.

NIP. 196205201989021001

Unit Kerja : Departemen T. Mesin FT UNDIP

Reviewer 1

Prof. Dr. Jamari, S.T., M.T.

NIP. 197403042000121001

Unit Kerja : Departemen T.Mesin FT UNDIP

(2)

LEMBAR

HASIL PENILAIAN SEJAWAT SEBIDANG ATAU PEER REVIEW KARYA ILMIAH : JURNAL ILMIAH

Judul Jurnal Ilmiah (Artikel) : Effect of particle size and bed height on the characteristic of a fluidized bed dryer Jumlah Penulis : 6 orang (Eflita Yohana, Muchammad, Mohammad Tauviqirrahman, Awallina Ani

Sayekti, Kwang-Hwan Choi, and Vita Paramita) Status Pengusul : penulis Ke-1 (Bukan Penulis Korespondensi) Identitas Jurnal Ilmiah : a. Nama Jurnal : Cogent Engineering

b. Nomor ISSN : 2331-1916

c. Vol, No., Bln Thn : Volume 7, Issue 1 (2020)

d. Penerbit : Cogent OA

e. DOI artikel (jika ada) : https://doi.org/10.1080/23311916.2020.1738185 f. Alamat web jurnal : https://www.tandfonline.com/doi/full/10.1080/2331191

6.2020.1738185

Alamat Artikel : https://www.tandfonline.com/doi/epub/10.1080/2331191 6.2020.1738185?needAccess=true

g. Terindex : Scopus, Q2

Kategori Publikasi Jurnal Ilmiah :

√

Jurnal Ilmiah Internasional

(beri

Jurnal Ilmiah Nasional Terakreditasi Jurnal Ilmiah Nasional Tidak Terakreditasi Hasil Penilaian Peer Review :

Komponen Yang Dinilai

Nilai Maksimal Jurnal Ilmiah

Nilai Akhir Yang Diperoleh Internasional

Nasional Terakreditasi

Nasional Tidak Terakreditasi

a. Kelengkapan unsur isi jurnal (10%) 4,00 3,50

b. Ruang lingkup dan kedalaman pembahasan (30%)

12,00 11,00

c. Kecukupan dan kemutahiran data/informasi dan metodologi (30%)

12,00 11,50

d. Kelengkapan unsur dan kualitas terbitan/jurnal (30%)

12,00 11,00

Total = (100%) 40,00 37,00

Nilai Pengusul = (40% x 37,00) = 14,80 Catatan Penilaian artikel oleh Reviewer :

1. Kesesuaian dan kelengkapan unsur isi jurnal:

Paper yang ditulis sudah lengkap bagian-bagiannya (Abstract, Introduction, Methodology, Results and Discussion, Conclusion, References) sesuai dengan format dalam panduan penulisan jurnal “Cogent Engineering”. Lingkup pembahasan juga sesuai dengan latar belakang pengusul yaitu Teknik Mesin

2. Ruang lingkup dan kedalaman pembahasan:

Pembahasan dalam paper ditulis secara lengkap dan mendalam. Hubungan sebab akibat fenomena dalam karakteristik

fluidized bed dryer

juga dianalisis secara komprehensif. Data-data hasil penelitian disajikan dengan grafik yang menarik.

3. Kecukupan dan kemutakhiran data/informasi dan metodologi:

Kebaruan ide telah dinyatakan secara eksplisit dalam Introduction. 9 dari 20 paper sitasi merupakan paper terkini (< 10 tahun terakhir). Hasil Turnitin similarity index menunjukkan 18 %. Metodologi ditulis secara runut mulai dari persamaan yang digunakan, kondisi batas, pembuatan grid, dan validasi.

4. Kelengkapan unsur dan kualitas terbitan:

Paper dipublish dalam jurnal Q2 dengan SJR 0.31. Unsur-unsur terbitan juga dicantumkan dengan lengkap. Selain Scopus, jurnal ini juga sudah diindex dalam database ternama Web of Science Emerging Sources Citation Index (ESCI).

Semarang, Reviewer 1

Prof. Dr. Jamari, S.T., M.T.

NIP. 197403042000121001

Unit Kerja : Departemen T.Mesin FT UNDIP

40

(3)

LEMBAR

HASIL PENILAIAN SEJAWAT SEBIDANG ATAU PEER REVIEW KARYA ILMIAH : JURNAL ILMIAH

Judul Jurnal Ilmiah (Artikel) : Effect of particle size and bed height on the characteristic of a fluidized bed dryer Jumlah Penulis : 6 orang (Eflita Yohana, Muchammad, Mohammad Tauviqirrahman, Awallina Ani

Sayekti, Kwang-Hwan Choi, and Vita Paramita) Status Pengusul : penulis Ke-1 (Bukan Penulis Korespondensi) Identitas Jurnal Ilmiah : a. Nama Jurnal : Cogent Engineering

b. Nomor ISSN : 2331-1916

c. Vol, No., Bln Thn : Volume 7, Issue 1 (2020)

d. Penerbit : Cogent OA

e. DOI artikel (jika ada) : https://doi.org/10.1080/23311916.2020.1738185 f. Alamat web jurnal : https://www.tandfonline.com/doi/full/10.1080/2331191

6.2020.1738185

Alamat Artikel : https://www.tandfonline.com/doi/epub/10.1080/2331191 6.2020.1738185?needAccess=true

g. Terindex : Scopus, Q2

Kategori Publikasi Jurnal Ilmiah :

√

Jurnal Ilmiah Internasional

(beri

Jurnal Ilmiah Nasional Terakreditasi Jurnal Ilmiah Nasional Tidak Terakreditasi Hasil Penilaian Peer Review :

Komponen Yang Dinilai

Nilai Maksimal Jurnal Ilmiah

Nilai Akhir Yang Diperoleh Internasional

Nasional Terakreditasi

Nasional Tidak Terakreditasi

a. Kelengkapan unsur isi jurnal (10%) 4,00 3,00

b. Ruang lingkup dan kedalaman pembahasan (30%)

12,00 11,50

c. Kecukupan dan kemutahiran data/informasi dan metodologi (30%)

12,00 11,00

d. Kelengkapan unsur dan kualitas terbitan/jurnal (30%)

12,00 11,00

Total = (100%) 40,00 36,50

Nilai Pengusul = (40% x 36,50) = 14,60 Catatan Penilaian artikel oleh Reviewer :

1. Kesesuaian dan kelengkapan unsur isi jurnal:

Bidang kajian, yaitu aplikasi metode numerik berbasis CFD sudah sesuai dengan kepakaran pengusul. Kelengkapan artikel sudah memenuhi panduan yang dipersyaratkan oleh jurnal”Cogent Engineering”

2. Ruang lingkup dan kedalaman pembahasan:

Lingkup pembahasan disajikan secara detil dan runut. Efek modifikasi particle size pada fluidized bed dryer terhadap dipelajari secara kmprehensif. Hasil-hasil penelitian yang utama juga didukung dengan analisis yang mendalam dan referensi lain yang sudah terpublikasi sebagai perbandingan. Pengaruh variabel-variabel penelitian terhadap perilaku sistem disajikan dalam grafik yang menarik.

3. Kecukupan dan kemutakhiran data/informasi dan metodologi:

Hasil penelitian menunjukkan kebaruan data. 45 % pustaka merupakan hasil sitasi terkini (< 10 tahun terakhir). Metodologi yang digunakan dirancang dan dijalankan dengan baik. Step-by-step analisis numerik untuk solusi karakteristik hydrodynamik fluidized bed dryer ditulis lengkap.

4. Kelengkapan unsur dan kualitas terbitan:

Artikel ini diterbitkan dalam jurnal Q2 dengan SJR 0.31. Proses review juga dijalankan secara ketat. Jurnal diterbitkan oleh penerbit berkelas seperti Taylor & Frances.

Semarang, Reviewer 2

Prof.Dr.rer.nat. Ir. A. P. Bayuseno, M.Sc.

NIP. 196205201989021001

Unit Kerja : Departemen T. Mesin FT UNDIP

40

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Cogent Engineering • Open Access • Volume , Issue • January • Article number

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Effect of particle size and bed height on the characteristic of a fluidized bed dryer

Yohana E. , Muchammad , Tauviqirrahman M. , Sayekti A.A. , Choi K.-H. , Paramita V.

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Department of Mechanical Engineering, Engineering Faculty, Diponegoro University, Jl. Prof. Sudharto, SH., Semarang, 50275, Indonesia

College of Engineering, Pukyong National University, 365 Sinseon-ro, Nam-gu, Busan, 608-739, South Korea Chemical Engineering Department, Vocational School, Diponegoro University, Jl. Prof. Sudharto, SH., Semarang, 50275, Indonesia

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Food, pharmaceutical, mineral and petroleum industries often use fluidized bed dryers for the drying process. In the present study, fluidized bed dryers in the tea processing industry is of particular interest. The main aim of this work is to investigate the effect of on the static bed height on the the coefficient of heat transfer in the fluidized bed dryer. In addition, the effect of particle size variations on the bed pressure drop in a fluidized bed dryer is also explored based on the computational fluid

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MECHANICAL ENGINEERING | RESEARCH ARTICLE

Effect of particle size and bed height on the characteristic of a fluidized bed dryer

Eflita Yohana¹, Muchammad¹, Mohammad Tauviqirrahman¹*, Awallina Ani Sayekti¹, Kwang-Hwan Choi²and Vita Paramita³

Abstract: Food, pharmaceutical, mineral and petroleum industries often use flui- dized bed dryers for the drying process. In the present study, fluidized bed dryers in the tea processing industry is of particular interest. The main aim of this work is to investigate the effect of on the static bed height on the the coefficient of heat transfer in the fluidized bed dryer. In addition, the effect of particle size variations on the bed pressure drop in a fluidized bed dryer is also explored based on the computational fluid dynamics (CFD) approach. The multiphase, solid, and gas Eulerian-Eulerian models are employed to investigate the behavior of the fluidized bed dryers. The solid gas interphase interactions is predicted by the Syamlal O ’ Brien and Gidaspow drag models. To get more accurate results, a 3D fluidized bed model is applied. The analysis is performed by varying the particle sizes and the static bed

ABOUT THE AUTHORS

Eflita Yohana received Doctoral degree in Mechanical Engineering from Pukyong National University, South Korea.

Muchammad received his Masters Degree in Mechanical Engineering from Gadjah Mada University.

Mohammad Tauviqirrahman is Head of Laboratory for Engineering Design and Tribology, Diponegoro University. He received his BEng in Mechanical Engineering from Diponegoro University in 2003, his Masters Degree (2006) in Mechanical Engineering from Institute of Technology Bandung, and his Doctorate (2013) in Laboratory for Surface Technology and Tribology, University of Twente, the Netherlands. His research interest is Computational Fluid Dynamics (CFD); both the fundamental basis and applications.

Awallina Ani Sayekti received her Bachelor of Science in Mechanical Engineering from Diponegoro University, Indonesia.

Kwang-Hwan Choi is a professor in the Departement of Refrigeration and Air Conditioning Engineering Pukyong National University, South Korea.

Vita Paramita her Doctorate from Laboratory of Food Engineering, Engineering Faculty from Tottori University, Japan.

PUBLIC INTEREST STATEMENT

The industrial use of dryers is widely used and is continuously being developed to meet the needs of more and more varied products. One com- monly used dryer is the fluidized bed dryer because of its effectiveness. A fluidized bed dryer is a tool that uses warm air to reduce water content and humidity from the product. Fluidized bed dryer performance includes pressure drop and coefficient heat transfer. There are many characteristics and operational parameters that influence fluidized bed dryer performance. The present study analyzed the effects of particle diameter and bed height on a bed dryer using the CFD method. Numerical results show that the increase in particle diameter and bed height can improve the drying process.

Eflita Yohana

Mohammad Tauviqirrahman

Yohana et al.,Cogent Engineering(2020), 7: 1738185 https://doi.org/10.1080/23311916.2020.1738185

Received: 09 September 2019 Accepted: 29 January 2020

*Corresponding author: Mohammad Tauviqirrahman, Department of Mechanical Engineering, Engineering Faculty, Diponegoro University, Jl.

Prof. Sudharto, SH., Semarang 50275, Indonesia

Email:[email protected] Reviewing editor:

Duc Pham, School of Mechanical Engineering, University of Birmingham, Birmingham, United Kingdom

Additional information is available at the end of the article

Page 2 of 16

(13)

CIVIL & ENVIRONMENTAL ENGINEERING | RESEARCH ARTICLE

Geoengineering site characterization for foundation integrity assessment

K. D. Oyeyemi¹*, O.M. Olofinnade², A. P. Aizebeokhai¹, O. A. Sanuade³, M. A. Oladunjoye⁴, A. N. Ede², T. A. Adagunodo¹and W. A. Ayara¹

Abstract: Inefficient near-surface characterizations prior to building construction have largely contributed to the incessant building failures in the form of structural defects and building collapses recently occurring in southern parts of Nigeria.

Combined geophysical and geotechnical investigations have been used to select suitable foundation type and depth at a building construction site in part of the Lagos Island, Nigeria. Three geoelectrical resistivity survey profiles of length 150 m each were conducted using minimum and maximum electrode spacing of 5.0 m and 45.0 m, respectively. Boring, in-situ geomaterials samplings, cone penetrating tests, standard penetrometer tests and laboratory tests were among the geotech- nical investigations carried out in accordance with the British standard code of practice. The geoelectrical resistivity imaging results provide the lateral and spatial spread of the geoelectrical units stratification within the study area, their clay and water contents. The results of the laboratory and geotechnical tests also reveal the subsoils lithologic units, their compressibility and shear strengths. A deeper pile- type foundation on a more competent stable subsoil stratum at the depth greater than 13 m is recommended for the proposed buildings in the study area so as to effectively transmit their loads.

Subjects: Geology - Earth Sciences; Geophysics; Civil, Environmental and Geotechnical Engineering

Oyeyemi Kehinde David

ABOUT THE AUTHOR

Dr. Oyeyemi Kehinde David, PhDcurrently works at the Applied Geophysics Unit of the Department of Physics, Covenant University Ota Nigeria. His research interests include applications of various cutting edge geophysical techniques to proffer solutions to different exploration (hydrocarbon, geothermal and groundwater), geotechnical engineering and environmental problems.

PUBLIC INTEREST STATEMENT

The recent incessant building collapse in Lagos State, Nigeria is worrisome to all and sundry. This is due to a huge loss of lives and properties running into millions of dollars yearly. The major findings have revealed that one major factor causing the failure and collapse of buildings in Nigeria is the fact that a culture of conducting reliable geophysical and geotechnical investigations for accurate subsoil characterization information prior to building construction is non- existent in Nigeria. This research has made an effort to integrate both geophysical and geotechnical techniques to characterize near-surface heterogeneity of the area of study. The results obtained were used to choose a suitable foundation type for the investigated building construction site.

Oyeyemi et al.,Cogent Engineering(2020), 7: 1711684 https://doi.org/10.1080/23311916.2020.1711684

Received: 23 March 2019 Accepted: 22 December 2019 First Published: 08 January 2020

*Corresponding author: K. D. Oyeyemi Department of Physics, Covenant University, Nigeria

E-mail:[email protected] Reviewing editor:

Felipe Villalobos, Universidad Catolica De La Santisima Concepcion, Chile

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COMPUTER SCIENCE | RESEARCH ARTICLE

Global output tracking by state feedback for high-order nonlinear systems with time-varying delays

Keylan Alimhan^1,2*, Orken Mamyrbayev³, Aigerim Erdenova¹and Almira Akmetkalyeva¹

Abstract: This paper focuses on the problem of global practical output tracking for a class of high-order non-linear systems with time-varying delays (via state feedback). Under mild growth conditions on the system nonlinearities involving time-varying delays, we construct a state feedback controller with an adjus- table scaling gain. With the aid of a Lyapunov – Krasovskii functional, the scaling gain is adjusted to dominate the time-delay nonlinearities bounded by the growth conditions and make the tracking error arbitrarily small while all the states of the closed-loop system remain to be bounded. Finally,

a simulation example is given to illustrate the effectiveness of the tracking controller.

Subjects: Computing & IT Security; Computer Engineering; Computer Science; General Keywords: practical output tracking; time-varying delay nonlinear systems; state feedback; homogeneous domination technique

Keylan Alimhan

ABOUT THE AUTHOR

Keylan Alimhan received the M.S. degree in Information Sciences in 1998 from Tokyo Denki University (TDU), Japan and he finished his doctoral candidate course work in 2003 at TDU. In March 2009, he received the Doctor of Science degree in Mathematical Sciences from Graduate School of Science and Engineering of TDU. From 1985 to 1996, he served as an Assistant Professor in the Department of Mathematics, XU. From 2003 to 2004, he was a Research Associate in the Department of Information Sciences, TDU. From 2004 to present, he served as a Instructor, Assistant Professor and Research Fellow in School of Science and Engineering, TDU. Since

September 2014, he has been with Faculty of Mechanics and Mathematics, Eurasian National University by named L.N.Gumilev as a Visiting Professor. His main research interests include nonlinear control theory, in particular, output feedback control of nonlinear systems and nonlinear robust control.

PUBLIC INTEREST STATEMENT

Modern control theory occupies one of the leading places in the technical sciences and at the same time belongs to one of the branches of applied mathematics, which is closely related to computer technology. Control theory based on mathematical models allows you to study dynamic processes in automatic systems, to establish the structure and parameters of the components of the system to give the real control process the desired properties and specified quality. It is the foundation for special disciplines that solve the problems of automation of management and control of technological processes, design of servo systems and regulators, automatic monitoring of production and the environment, the creation of automatic machines and robotic systems. It is well known that the creation of a new model of a robot and, moreover, a robot technical system (RTS) is associated with organizational issues of the interaction of four interdependent functional elements, which can be designated as: mechanisms, energy, electronics, programs (algorithms).

Alimhan et al.,Cogent Engineering(2020), 7: 1711676 https://doi.org/10.1080/23311916.2020.1711676

Received: 11 September 2019 Accepted: 13 December 2019 First Published: 07 January 2020

*Corresponding author: Keylan Alimhan, IICT, Institute of Information and Computational Technologies, Pushkin 125, Almaty 050010, Kazakhstan

E-mail:[email protected] Reviewing editor::

Duc Pham, University of Birmingham, UK

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