Heat Transfer

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Questions related to Heat Transfer

Is there any adhesive material to attach stainless steel foil to Alumina substrate at high temperature ?

I am trying to fabricate a resistive heater from Nichrome foil on an Alumina substrate, that will give a very high heat flux around 500 w/cm^2, which may cause delamination of the foil or bad...

29 February 2020 1,825 9 View

Is the research field of nanofluids saturated or any new field/application is still underestimated?

I am working on the enhancement of heat transfer using nanofluids from the past few years. But sometimes, I think that the research in the applications of nanofluids is saturated. If not, what are...

28 February 2020 4,936 9 View

How do you calculate the velocity at the edge of boundary layer for the flow over a aerofoil? for the case of leading edge of a aerofoil?

Also i need to know how to exactly calculate the roughness element height I have attached the required details and formula any helping material or method or insights will be great for my master...

25 February 2020 7,130 14 View

Hydraulic diameter calculation of wire-mesh conduit?

Does the hydraulic diameter of a porous media heat exchanger depend only on the porosity and the wire diameter? Doesn't the shape of the conduit affect the hydraulic diameter? i.e; if the wire...

25 February 2020 2,959 4 View

When I can find 3D printer for Composite materials?

If I find this type of printer, can it print very precision pieces?

18 February 2020 2,881 2 View

What is the thermal topology optimization error meaning using ANSYS?

Hi guys, I did a typical thermal topology optimization of a square heat sink (2D), three edges are perfectly insulation, and one is constant temperature, and the surface body is internal heat...

18 February 2020 4,891 0 View

How to plot heatlines in three dimensions?

Hello All, I want to plot heat lines. I have simulated three dimensional heat and fluid flow problem in Fluent. I have the data for velocity, temperature fields. Now I want to obtain an unknown...

17 February 2020 9,851 3 View

How to calculate the heating zone length of a thermal screw conveyor?

Will the NTU heat transfer model suffice to determine the heating zone length of the screw conveyor or are there any other accurate methods of arriving at a solution? How does the commercial...

15 February 2020 4,799 3 View

How to solve thermal resistance network problem by iteration until convergence is achieved?

A Thermal resistance network is defined for analysis by creating a model. How to solve the system of equations? Kindly advice

10 February 2020 5,862 12 View

How to know if your case is steady or transient in Fluent simulation?

Hello, I perform simulations for turbulent flows over bluff bodies and I calculate the Drag coefficient . I don't know what state to choose ( steady or transient ). When the steady state is...

09 February 2020 3,571 8 View

How to define thermal conductivity as function of temperature and time, in ABAQUS?

I am doing pure heat transfer analysis in ABAQUS. My in put variable is thermal conductivity. I want to define conductivity variation with temperature and time. In ABAQUS temperature dependent...

06 February 2020 9,683 2 View

Sharma, B., Kumar, S investigation of MHD stagnation-point flow and heat transfer of sodium alginate non-Newtonian?

Sharma, B., Kumar, S., & Paswan, M. K. (2019). Numerical investigation of MHD stagnation-point flow and heat transfer of sodium alginate non-Newtonian nanofluid. Nonlinear Engineering, 8(1),...

05 February 2020 2,019 1 View

In nanofluid flows, are there combinations of boundary conditions where the heat transfer rate decreases as the nanoparticle volume fraction increase?

In nanofluid flows

31 January 2020 9,840 5 View

Where can I find experimental data for a flow boiling experiment?

I need a flow boiling test case with data for void fraction, heat transfer coefficient and pressure drops. I am evaluating the different solvers available on the market in hopes of optimizing the...

29 January 2020 5,639 6 View

How much heat transfer coefficient of air?

I am looking of value heat transfer coefficient to assign in Ansys steady state thermal simulation. But I'm not clear about heat transfer coefficient is for material or air? Because in...

21 January 2020 7,654 5 View

How will I calculate the surface temperature of a HDPE pipe that is exposed to the sun?

I need to calculate the final temperature of a pipe that's been lying in the sun for the day, however, I am unsure how to do this. I know how to calculate the heat transfer through the pipe wall...

20 January 2020 1,522 10 View

Heat Transfer to a stationary fluid through a heated tank shell, fea OR cfd?

Dear All I have a stationary volume of fluid contained in a tank shell. The fluid in the tank shell needs to be maintained at a certain temperature. The tank shell is heated up through electric...

14 January 2020 8,396 3 View

What is the effect of having an oversized fixed-bed pyrolysis reactor?

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 4,973 4 View

What is the effect of Bejan number on heat transfer applications?

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 6,347 3 View

Arc shaped heat source process examples?

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 9,013 2 View

Higher or lower values of local entropy generation rate is desirable for the better heat transport?

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 5,572 3 View

Where can I find an analytical solution of diffusion equation with zero flux boundary at outlet?

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 6,493 1 View

Which turbulence model is most suitable for numerical calculations of flow and heat transfer in annular finned tubes geometry?

17 December 2019 3,411 13 View

Dependence of convective Heat transfer coefficient on surface temperature?

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 2,735 3 View

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