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Questions related to Heat Transfer
I'm currently designing a single pass shell and tube heat exchanger. In the Nusselt number equation I have chosen to use, it requires me to calculate the Prandtl number at the SURFACE of the tube,...
01 February 2021 2,232 11 View
I know many textbooks include empirical relations between Nu, Re_x, and Pr inside a turbulent boundary layer on a flat wall. However, I want to directly calculate h from known boundary layer...
20 January 2021 1,419 3 View
Required a spray or paint which can resist the heat flow between two steel block in physical contact. Working temperature is 250 degree celsius.
13 January 2021 2,290 6 View
I am calculating the phonon contribution to thermal conductivity for 4 perovskites (BaZrO3, BaSnO3, BaHfO3, and KTaO3) with relatively wide bandgap. When I compare my results for BaZrO3 to the...
28 December 2020 3,430 3 View
Hi, My simulation is coupled temp-displacement analysis which consist of two parts. Part1 penetrates Part2 and makes elastic-plastic deformation,heat transfer and then detached. How to...
26 December 2020 3,725 1 View
A tube is subjected to air at standard temperature and pressure conditions with velocity 5 m/s. initial temperature of the tube is 980 K and drops to 500 K after interaction with the cool air....
22 December 2020 6,547 3 View
I have modelled a condenser of a refrigerator in COMSOL. I made different designs and i want to calculate which design has the highest heat transfer rate. The way i calculate it now is by: q =...
03 December 2020 380 2 View
concrete beam heat transfer analysis steady and transient problem in interaction and load step
18 November 2020 6,454 3 View
Why does not the temperature at the base surface of the microchannel decrease relative to water when using nanofluids?
09 November 2020 3,424 3 View
I have been trying so hard with ANSYS Fluent and started to doubt myself and understanding of physics. All I want is to obtain the temperature on both sides for a wall that is adjacent to a fluid,...
09 November 2020 2,129 5 View
I have 6 heaters each of power 0.5 kW and mounted below a curved mild steel sheet of thickness 4 mm. The heaters and the below section is covered and insulated. I want the top surface to be...
06 November 2020 347 5 View
Can anyone help me to understand/provide some reference regarding how to calculate heat flow of the area from the radioactive heat production values.
06 November 2020 1,824 1 View
In a surface energy analysis, we have found a very interesting result- the cohesive energy of aluminum fumarate is lower than the adhesive energy of aluminum fumarate-water pair. Also, the uptake...
06 November 2020 4,445 2 View
I have water flowing at 4 GPM at 2.5 feet per second through 50ft of 0.375 in. outer diameter tubing with 0.014 in. wall thickness. The water flows through copper tubing into the 50ft coil...
02 November 2020 8,192 5 View
I am trying to simulate subcooled boiling flow through an annulus using Fluent. Is it possible to get the values of interfacial heat transfer coefficients from either FLUENT report or CFD post?...
01 November 2020 3,761 3 View
I am validating my CFD mini rectangular channel model. For that purpose, I need to know how to get the Nu number accurately. For Calculating Nusselt no. from fluent post-processing as follows:...
25 October 2020 3,697 5 View
Need to measure bead size, depth of penetration, weld area etc
16 October 2020 1,065 4 View
Dear All I am trying to simulate a problem that simplified as shown in the attached file. It has two different walls one inside the other and surrounded by air. I want to simulate the problem in...
15 October 2020 1,137 19 View
I am doing hypersonic flow analysis over a reentry capsule
03 October 2020 4,041 7 View
I want to find the analytical solution of a radial diffusion system (1D cylindrical coordinates). Here what is considered is pressure diffusion. The conditions are simple and similar to the...
30 September 2020 2,570 4 View
Hello, I am currently working on the design of a device that measures thermal conductivity of sediments and I am not sure if i estimated heat losses and heat flux in the correct way. The device is...
24 September 2020 8,235 6 View
What is the characteristic length of a vertical sinusoidal wall with natural convection to calculate Rayleigh number? (x represents characteristic length in the attached formula)
22 September 2020 8,891 5 View
Hello! Could you help me with the following calculations. I want to repeat the results (NUMERICAL SIMULATION ON LAMINAR FREE-CONVECTION). FLOW AND HEAT TRANSFER OVER A VERTICAL PLATE...
22 September 2020 6,543 1 View
Is it possible to find in fluent? Any other method is there?
11 September 2020 5,589 3 View