Results 261 to 270 of about 501,561 (311)

Comparative analysis for the prediction of boiling heat transfer coefficient of R134a in micro/mini channels using artificial intelligence (AI)-based techniques

International Journal of Modelling and Simulation, 2020
Refrigerant R134a has been extensively used in the past because of its zero ozone depletion potential (ODP). In the present research, artificial intelligence (AI)-based gene expression programming (GEP), artificial neural networks (ANN) and support ...
N. Parveen, S. Zaidi, M. Danish
semanticscholar   +1 more source

A modified sequential gradient-based method for the inverse estimation of transient heat transfer coefficients in non-linear one-dimensional heat conduction problems

International Communications in Heat and Mass Transfer, 2021
Abstract In this communication, we introduce an online sequential implementation of a gradient-based method for reconstructing transient heat transfer coefficients in the context of non-linear one-dimensional heat conduction problems. Such a method employs a quasi-Newton updating strategy for computing the descent direction, in contrast with the ...
Tourn, Benjamin Alfredo, Álvarez Hostos, Juan Carlos, Fachinotti, Victor Daniel   +2 more
openaire   +2 more sources

Numerical estimation of convective heat transfer coefficient through linearization

International Journal of Heat and Mass Transfer, 2016
Abstract In this work, methods for estimating the local convective heat transfer coefficient in coiled tubes are proposed and assessed. The methods include truncated generalized singular value decomposition, Tikhonov regularization, and a novel filtering technique which mitigates noise propagation by truncating the frequency content of ...
Bazán, Fermín S. V., Bedin, Luciano, BOZZOLI, Fabio   +2 more
openaire   +2 more sources

Effect of three types of magnetic field modulation on the instability of heat transfer in micropolar nanofluid filled within Hele-Shaw cell

Numerical Heat Transfer, Part A Applications, 2023
This article investigates the impact of three different types of magnetic field modulation on the instability of micropolar nanofluid filled within Hele-Shaw cells applying both nonlinear and linear approaches.
Ismail, B. Bhadauria, Anurag Srivastava
semanticscholar   +1 more source

Heat transfer and thermal conductivity of magneto micropolar fluid with thermal non-equilibrium condition passing through the vertical porous medium

Waves in Random and Complex Media, 2022
This paper investigates the incompressible mixed convection flow of electrically conductive micropolar fluid with a thermal non-equilibrium condition that passes through the vertical circular (pipe) porous medium.
Naveed Ahmad Khan, M. Sulaiman
semanticscholar   +1 more source

Performance Optimization for a Multielement Thermoelectric Refrigerator with Linear Phenomenological Heat Transfer Law

, 2020
A model of a multielement thermoelectric refrigerator with another linear heat transfer law, the linear phenomenological heat transfer law Q∝Δ(1/T)Q\propto \Delta (1/T), is established.
Lingen Chen, F. Meng, Y. Ge, H. Feng
semanticscholar   +1 more source

Entropy generation on the variable electric field and EMHD SWCNT-blood nanofluid with melting/non-melting heat transfer

Proceedings of the Institution of mechanical engineers. Part E, journal of process mechanical engineering, 2022
This work is concerned with the study of laminar, steady electro-magnetohydrodynamic flow and entropy generation of SWCNT-blood nanofluid with melting/non-melting heat transfer.
S. Suneetha, L. Wahidunnisa, S. Reddy, P. B. A. Reddy   +3 more
semanticscholar   +1 more source

Numerical study of melting heat transfer in stagnation-point flow of hybrid nanomaterial (MWCNTs+Ag+kerosene oil)

International journal of numerical methods for heat & fluid flow, 2021
Purpose The purpose of this study is to analyze hybrid nanofluid (MWCNTs+Ag+Kerosene oil) over a stretched cylinder. Flow analysis is carried out in presence of stagnation-point. Features of heat transport are examined via melting conditions.
T. Hayat, K. Muhammad, A. Alsaedi
semanticscholar   +1 more source

Calculation of thermal stress field with non-linear surface heat-transfer coefficient during quenching

Metals and Materials, 1998
The thermal physical properties were treated as a functions of temperature. On the basis of non-linear surface heat-transfer coefficient by Ref. [2], the temperature field with non-linear surface heat-transfer coefficients was calculated using finite element technique.
Heming Cheng, Honggang Wang, Xieqing Huang   +2 more
openaire   +1 more source

Determination of heat transfer coefficient in a T-shaped cavity by means of solving the inverse heat conduction problem

International journal of numerical methods for heat & fluid flow, 2019
Purpose T-shaped cavities occur by design in many technical applications. An example of such a stator cavity is the side space between the guide vane carriers and the outer casing of a steam turbine.
A. Frąckowiak, David Spura, U. Gampe, M. Ciałkowski   +3 more
semanticscholar   +1 more source