Effect of Phase-Lags Model on Thermoelastic Interactions of Nonlocal Elastic Hollow Cylinder with Voids Material in the Presence of Time-Dependent Heat Flux

2022 ◽  
Author(s):  
Dinesh Kumar Sharma
Keyword(s):  
Heat Flux ◽  
Hollow Cylinder ◽  
Time Dependent ◽  
Phase Lags

scholarly journals Brief note on heat flow with arbitrary heating rates in a hollow cylinder

2011 ◽  
Vol 15 (1) ◽  
pp. 275-280 ◽  
Author(s):  
K.C. Deshmukh ◽  
S.D. Warbhe ◽  
V.S. Kulkarni
Keyword(s):  
Heat Flux ◽  
Temperature Field ◽  
Temperature Distribution ◽  
Hollow Cylinder ◽  
Integral Transform ◽  
Internal Heat ◽  
Internal Heat Generation ◽  
Time Dependent ◽  
Internal Boundary ◽  
Heating Rates

In this paper the temperature distribution is determined through a hollow cylinder under an arbitrary time dependent heat flux at the outer surface and zero heat flux at the internal boundary due to internal heat generation within it. To develop the analysis of the temperature field, we introduce the method of integral transform. The results are obtained in a series form in-terms of Bessel?s functions.

Existence of a time-dependent heat flux-related ponderomotive effect

1980 ◽  
Vol 23 (8) ◽  
pp. 1532 ◽  
Author(s):  
H. Schamel ◽  
Ch. Sack
Keyword(s):  
Heat Flux ◽  
Time Dependent

Heat Transfer Analysis of Laminar Pulsating Flow in a Rectangular Channel Using Infrared Thermography

2021 ◽  
Author(s):  
Richard Blythman ◽  
Sajad Alimohammadi ◽  
Nicholas Jeffers ◽  
Darina B. Murray ◽  
Tim Persoons
Keyword(s):  
Heat Transfer ◽  
Heat Flux ◽  
Analytical Solution ◽  
Local Time ◽  
Rectangular Channel ◽  
Pulsating Flow ◽  
Time Dependent ◽  
Heat Transfer Analysis ◽  
Flux Boundary Condition ◽  
Hydrodynamic Behaviour

Abstract While numerous applied studies have successfully demonstrated the feasibility of unsteady cooling solutions, a consensus has yet to be reached on the local instantaneous conditions that result in heat transfer enhancement. The current work aims to experimentally validate a recent analytical solution (on a local time-dependent basis) for the common flow condition of a fully-developed incompressible pulsating flow in a uniformly-heated vessel. The experimental setup is found to approximate the ideal constant heat flux boundary condition well, especially for the decoupled unsteady scenario where the amplitude of the most significant secondary contributions (capacitance and lateral conduction) amounts to 1.2% and 0.2% of the generated heat flux, respectively. Overall, the experimental measurements for temperature and heat flux oscillations are found to coincide well with a recent analytical solution to the energy equation by the authors. Furthermore, local time-dependent heat flux enhancements and degradations are observed to be qualitatively similar to those of wall shear stress from a previous study, suggesting that the thermal performance is indeed influenced by hydrodynamic behaviour.

Reconstruction of time-dependent boundary heat flux by a BEM-based inverse algorithm

2006 ◽  
Vol 30 (9) ◽  
pp. 767-773 ◽  
Author(s):  
Ryszard Bialecki ◽  
Eduardo Divo ◽  
Alain Kassab
Keyword(s):  
Heat Flux ◽  
Time Dependent ◽  
Inverse Algorithm

Real-time estimation of time-dependent imposed heat flux in graded index media by KF-RLSE algorithm

2019 ◽  
Vol 150 ◽  
pp. 1-10 ◽  
Author(s):  
Shuang Wen ◽  
Hong Qi ◽  
Xiao-Ying Yu ◽  
Ya-Tao Ren ◽  
Lin-Yang Wei ◽  
...  
Keyword(s):  
Heat Flux ◽  
Real Time ◽  
Time Estimation ◽  
Time Dependent ◽  
Graded Index ◽  
Real Time Estimation ◽  
Estimation Of Time

scholarly journals A Theorem for Finding Maximum Temperature in Wet Grinding

2015 ◽  
Vol 2015 ◽  
pp. 1-13 ◽  
Author(s):  
J. L. González-Santander ◽  
G. Martín
Keyword(s):  
Heat Transfer ◽  
Heat Flux ◽  
Temperature Field ◽  
Integral Form ◽  
Stationary Regime ◽  
Time Dependent ◽  
Maximum Temperature ◽  
Theoretical Computation ◽  
Constant Heat ◽  
Workpiece Surface

We consider the solutions found in the literature for heat transfer in surface grinding, assuming a constant heat transfer coefficient for the coolant acting on the workpiece surface and a constant or linear heat flux profiles entering into the workpiece. From the integral form of the time-dependent temperature field reached in the workpiece, assuming the previous conditions, we prove that the maximum temperature always occurs in the stationary regime on the workpiece surface within the contact zone between the wheel and the workpiece. This result assures a very rapid method for the theoretical computation of the maximum temperature.

Transient Internal Forced Convection Under Arbitrary Time-Dependent Heat Flux

2013 ◽  
Author(s):  
M. Fakoor-Pakdaman ◽  
M. Andisheh-Tadbir ◽  
Majid Bahrami
Keyword(s):  
Heat Transfer ◽  
Heat Flux ◽  
Nusselt Number ◽  
Forced Convection ◽  
Analytical Model ◽  
Time Dependent ◽  
Bulk Temperature ◽  
Fluid Temperature ◽  
Flux Boundary Condition ◽  
Arbitrary Time

A new all-time model is developed to predict transient laminar forced convection heat transfer inside a circular tube under arbitrary time-dependent heat flux. Slug flow condition is assumed for the velocity profile inside the tube. The solution to the time-dependent energy equation for a step heat flux boundary condition is generalized for arbitrary time variations in surface heat flux using a Duhamel’s integral technique. A cyclic time-dependent heat flux is considered and new compact closed-form relationships are proposed to predict: i) fluid temperature distribution inside the tube ii) fluid bulk temperature and iii) the Nusselt number. A new definition, cyclic fully-developed Nusselt number, is introduced and it is shown that in the thermally fully-developed region the Nusselt number is not a function of axial location, but it varies with time and the angular frequency of the imposed heat flux. Optimum conditions are found which maximize the heat transfer rate of the unsteady laminar forced-convective tube flow. We also performed an independent numerical simulation using ANSYS to validate the present analytical model. The comparison between the numerical and the present analytical model shows great agreement; a maximum relative difference less than 5.3%.

Sign in / Sign up

Export Citation Format

Share Document