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19 results on '"Kanchan Mithun"'

2. Flow-Induced Deformation of Vertically Mounted Elastic Plate in Laminar Fluid Flow

Author

Kanchan, Mithun, Bhardwaj, Rajneesh, Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Ivanov, Vitalii, Series Editor, Cavas-Martínez, Francisco, Editorial Board Member, di Mare, Francesca, Editorial Board Member, Haddar, Mohamed, Editorial Board Member, Kwon, Young W., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Bhattacharyya, Suvanjan, editor, and Chattopadhyay, Himadri, editor

Published
2023
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5. Computational Study of Fluid Flow in Wavy Channels Using Immersed Boundary Method

Author

Kanchan, Mithun, Maniyeri, Ranjith, Kacprzyk, Janusz, Series Editor, Pal, Nikhil R., Advisory Editor, Bello Perez, Rafael, Advisory Editor, Corchado, Emilio S., Advisory Editor, Hagras, Hani, Advisory Editor, Kóczy, László T., Advisory Editor, Kreinovich, Vladik, Advisory Editor, Lin, Chin-Teng, Advisory Editor, Lu, Jie, Advisory Editor, Melin, Patricia, Advisory Editor, Nedjah, Nadia, Advisory Editor, Nguyen, Ngoc Thanh, Advisory Editor, Wang, Jun, Advisory Editor, Bansal, Jagdish Chand, editor, Das, Kedar Nath, editor, Nagar, Atulya, editor, Deep, Kusum, editor, and Ojha, Akshay Kumar, editor

Published
2019
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10. Application of Modeling and Control Approaches of Piezoelectric Actuators: A Review.

Author

Kanchan, Mithun, Santhya, Mohith, Bhat, Ritesh, and Naik, Nithesh

Subjects
PIEZOELECTRIC actuators, SLIDING mode control, PIEZOELECTRIC transducers, RANGE of motion of joints
Abstract

Piezoelectric actuators find extensive application in delivering precision motion in the micrometer to nanometer range. The advantages of a broader range of motion, rapid response, higher stiffness, and large actuation force from piezoelectric actuators make them suitable for precision positioning applications. However, the inherent nonlinearity in the piezoelectric actuators under dynamic working conditions severely affects the accuracy of the generated motion. The nonlinearity in the piezoelectric actuators arises from hysteresis, creep, and vibration, which affect the performance of the piezoelectric actuator. Thus, there is a need for appropriate modeling and control approaches for piezoelectric actuators, which can model the nonlinearity phenomenon and provide adequate compensation to achieve higher motion accuracy. The present review covers different methods adopted for overcoming the nonlinearity issues in piezoelectric actuators. This review highlights the charge-based and voltage-based control methods that drive the piezoelectric actuators. The survey also includes different modeling approaches for the creep and hysteresis phenomenon of the piezoelectric actuators. In addition, the present review also highlights different control strategies and their applications in various types of piezoelectric actuators. An attempt is also made to compare the piezoelectric actuator's different modeling and control approaches and highlight prospects. [ABSTRACT FROM AUTHOR]

Published
2023
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12. A Novel Poly(Ionic Liquid) as the Thermal Insulating Material

Author

Xu Zhenzhen, Maniyeri Ranjith, Hashimoto Makoto, J. Méndez Leticia, G. de la Fuente Idalia, Ma Guifeng, Zhao Yang, Wang Hong-tao, Hao Lifang, Kurokawa Natsumi, Wei Wenxin, I. Kharisov Boris, Pathan Sultan, Li Jun, Zhang Yanfen, V. Kharissova Oxana, Kanchan Mithun, Oida Kazuhiro, Liu Sumei, Puteri Tachrim Zetryana, Liu Zhongcheng, Suzuki Takeyuki, E.L. Rodríguez Francisco, S. Cánepa Alicia, Dau Xuan Duc, Ohashi Fumina, Repale Anil, A. Vargas Darío, Wang Lei, Li Xiangsheng, E.I. Torres Cynthia, Konig H., S. Quezada Thelma, Pal Girdhar, Cui Zhe, López Israel, and Bi Kewei

Subjects
chemistry.chemical_compound, Materials science, chemistry, Chemical engineering, General Chemical Engineering, Ionic liquid, Thermal, 02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, 0210 nano-technology, 01 natural sciences, 0104 chemical sciences
Abstract

Objective: A new poly(ionic liquid)(PIL), poly(p-vinylbenzyltriphenylphosphine hexafluorophosphate) (P[VBTPP][PF6]), was synthesized by quaternization, anion exchange reaction, and free radical polymerization. Then a series of the PIL were synthesized at different conditions. Methods: The specific heat capacity, glass-transition temperature and melting temperature of the synthesized PILs were measured by differential scanning calorimeter. The thermal conductivities of the PILs were measured by the laser flash analysis method. Results: Results showed that, under optimized synthesis conditions, P[VBTPP][PF6] as the thermal insulator had a high glass-transition temperature of 210.1°C, high melting point of 421.6°C, and a low thermal conductivity of 0.0920 W m-1 K-1 at 40.0°C (it was 0.105 W m-1 K-1 even at 180.0°C). The foamed sample exhibited much low thermal conductivity λ=0.0340 W m-1 K-1 at room temperature, which was comparable to a commercial polyurethane thermal insulating material although the latter had a much lower density. Conclusion: In addition, mixing the P[VBTPP][PF6] sample into polypropylene could obviously increase the Oxygen Index, revealing its efficient flame resistance. Therefore, P[VBTPP][PF6] is a potential thermal insulating material.

Published
2020

13. Numerical Simulation of Flow in a Wavy Wall Microchannel Using Immersed Boundary Method

Author

Pal Girdhar, Khanh Linh Duong, Shamrao Chavan Sanjay, A. Vargas Darío, Thi Huan Trinh, Repale Anil, Wang Lei, Kurokawa Natsumi, Thi Ngoc Mai Nguyen, Suzuki Takeyuki, Alagaraj Praveena, Quoc Hoan Duong, Babasaheb Patil-Deshmukh Aditya, Puteri Tachrim Zetryana, Harmeyer Grace, Thi Thu Trang Tran, Kanchan Mithun, Arumugam Balakrishnan, Subhash Mohite Sagar, A.A. Al-otaibi Asmaa, Hashimoto Makoto, Mathe Steven, Subramaniam Arunambiga, Oida Kazuhiro, Thi Anh Tuyet Vu, Ohashi Fumina, Pathan Sultan, A. Alsufyani Taghreed, S. Cánepa Alicia, Legate Steven, Dau Xuan Duc, Eckert Timothy, Maniyeri Ranjith, J. Méndez Leticia, and A. Saad Hosam

Subjects
020303 mechanical engineering & transports, Microchannel, Materials science, 0203 mechanical engineering, Computer simulation, Flow (mathematics), 0103 physical sciences, 02 engineering and technology, General Medicine, Mechanics, Immersed boundary method, 01 natural sciences, 010305 fluids & plasmas
Abstract

Background: Fluid flow in microchannels is restricted to low Reynolds number regimes and hence inducing chaotic mixing in such devices is a major challenge. Over the years, the Immersed Boundary Method (IBM) has proved its ability in handling complex fluid-structure interaction problems. Objectives: Inspired by recent patents in microchannel mixing devices, we study passive mixing effects by performing two-dimensional numerical simulations of wavy wall in channel flow using IBM. Methods: The continuity and Navier-Stokes equations governing the flow are solved by fractional step based finite volume method on a staggered Cartesian grid system. Fluid variables are described by Eulerian coordinates and solid boundary by Lagrangian coordinates. A four-point Dirac delta function is used to couple both the coordinate variables. A momentum forcing term is added to the governing equation in order to impose the no-slip boundary condition between the wavy wall and fluid interface. Results: Parametric study is carried out to analyze the fluid flow characteristics by varying amplitude and wavelength of wavy wall configurations for different Reynolds number. Conclusion: Configurations of wavy wall microchannels having a higher amplitude and lower wavelengths show optimum results for mixing applications.

Published
2020

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