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Questions related to Heat Transfer
Dear everyone, I was assigned to a project to "fix" an "ill-posed" reactor meant for pyrolysis, with the dimensions much larger than necessary (i.e. the reactor volume is around 25 m3 while we...
07 January 2020 4,893 4 View
In our case the Bejan number decreases with the increase of mass flow rate or Reynolds number of the multiphase fluids through a packed bed. However, if mass flow rate increases Nusselt number,...
28 December 2019 6,219 3 View
Hello everyone, I am looking for some examples in which line/arc-shaped heat sources can be used. For example, the laser sintering process used a moving point heat source. In a similar way, I am...
23 December 2019 8,929 2 View
Local entropy generation rate (comes from the 2nd law of thermodynamics) should be higher or lower for a heat transfer device for its better heat transport performance?
23 December 2019 5,459 3 View
Could anyone tell me that where can I find an analytical solution of diffusion equation (PDE) with 1D zero flux boundary at outlet? I need this for calculating rock permeability from pressure...
20 December 2019 6,410 1 View
Which turbulence model is most suitable for numerical calculations of flow and heat transfer in annular finned tubes geometry?
17 December 2019 3,301 13 View
Hi everyone. I have a question regarding, convective heat transfer coefficient. What is the relation between surface temperature and convective heat transfer coefficient of air? If the convective...
17 December 2019 2,702 3 View
What is the optimum time interval after each increment in heat flux? Should we wait till steady state for taking readings? Is time constant concept applicable on these type of problems?
08 December 2019 3,329 2 View
Hello, We need someone who is interested in bio-inspired subjects to collaborate with. This project is about bone printing and we need someone who is familiar with Laser-based additive...
26 November 2019 2,707 4 View
My classmate is trying to run a CFD simulation over a farward facing step with conjugate heat transfer over the step and the working fluid is air and at Re= 5000, 7000,1000. But the size of the...
25 November 2019 1,183 18 View
which software is suitable to make simulation of material or heat flow during Friction stir welding to steel?
21 November 2019 4,819 8 View
Hello, I' m going to simulate flow and heat transfer in partially filled channel with porous media. Heat transfer model in porous region is local thermal non-equilibrium (LTNE) and we have some...
10 November 2019 7,562 7 View
I am working on reverse Brayton cryocooler. In order to carry out dynamic analysis, I have to set either U or UA for the heat exchanger. As geometry is fixed for the heat exchanger, how to set U...
08 November 2019 8,379 1 View
My present work involves developing a 2D thermal solver for an ablating material using finite volume methods. Upon reaching ablation temperature, the material will ablate and changes its geometry...
08 November 2019 9,966 3 View
i have simulated a cylinder that it has four domains. these domains are concentric,and are fluid,solid, fluid and solid respectively,one of the solids generates heat and there is heat transfer...
14 October 2019 9,836 3 View
beside equations of heat transfer with mechanisms of Conduction, Convention and Radiation, is there a general equation to calculate the total heat transfer?
12 October 2019 975 3 View
What is the largest possible overall heat transfer coefficient for a shell and tube heat exchanger if the fluids in the shell and tube side are both water and this heat exchanger has one shell...
10 October 2019 7,969 2 View
10 October 2019 6,817 4 View
10 October 2019 4,142 4 View
Hello, I'm trying to solve a problem here: I have a tank with given dimensions made of a standard material. This tank is half full, and is un-insulated. If I have a sensor at the top of the tank,...
10 October 2019 6,962 16 View
i have been working on it as a project but the results i have obtained so far is not really clear
10 October 2019 5,054 3 View
Can anybody please tell me if there is a way to calculate surface temperature of a hot body. The body can be a metal slab or molten metal lying in a holding bed. Is there any way we can calculate...
10 October 2019 9,225 9 View
I have designed a helical coil heat exchanger however it is unconventional so I am having a hard time on the computation. I have designed a twin coil and my HE doesn't have an annulus. Also, I...
10 October 2019 6,120 7 View
06 October 2019 6,541 2 View