Thermally fully developed flow in ducts?

Hello dear friends Can we assume thermally fully developed flow for a flow in a duct with constant wall temperature? It is assumed there is transient energy equation that means temperature varies...

02 March 2018 1,943 1 View

Thermally fully developed in internal flow?

Hello dear friends What is the conditions that we can assume that we have thermally fully developed flow for both laminar and turbulent flows? I mean can we assume that we have thermally fully...

10 November 2017 8,745 8 View

Finned channel VS. simple channel?

Hello dear friends There is two channels that one of them is finned and another one is simple and without fin(as attached file). The fluid mass flow rates and inlet fluid temperatures in both...

10 November 2017 5,540 7 View

Energy equation with periodic boundary condition?

Hello dear friends What is your idea to solve energy equation analytically in a channel with cyclic boundary condition along the channel that its amplitude is variable? Is it doable?(Please find...

09 October 2017 8,886 7 View

Borehole Wall Temperature?

Hello dear researchers How can I calculate ground temperature and after that how can I find temperature distribution along borehole wall? kind regards

02 March 2017 2,104 0 View

Solving Partial Differential Equation(PDE)?

Hello dear friends I have a PDE problem(attached file) with its boundary and initial conditions. Could you please give me your opinion and methods about solving it?

02 March 2017 2,363 53 View

Neural Network-MATLAB?

09 October 2016 9,891 1 View

Any suggestion on the pressure and velocity Probe situation?

what should be the flow situation for locating pressure and velocity probe? I mean what should be the boundary layer situation for having the best place to locate these probes? regards

01 February 2015 5,331 5 View

Can anyone help with a problem in ANSYS ICEM?

I have modeled my geometry and blocked it in ICEM as attached file. The problem is that I cannot have a good meshing since determinant 2*2*2 says.

04 May 2014 3,283 12 View

What are the best boundary conditions that I should impose in inlet and outlet for modelling a compressible flow in a pipe?

I want to model a compressible flow with Ma~0.8 in a pipe in ANSYS CFX.

02 March 2014 5,760 3 View

Irradiation data for JAPAN?

Hi, Could you help me to get the latest (2019, 2020) solar resource data for a particular site in JAPAN? PV GIS and NSRDB data are not in reach to JAPAN, I'm looking for some other database for...

03 March 2021 961 3 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

Help request in CST microwave?

im working now on TPV solar cells and metamaterials and i realy need our help in CST microwave i have a tpv cell simulation and i want to extract particullarly the absorbtion of only the active...

02 March 2021 2,246 2 View

Timeout error!! Processor in the loop (PIL) using STM32F4 Matlab 2018a?

Dear Researchers I am trying to perform a PIL simulation using STM32F4 Discovery board and comunication serial USB TO TTL. During simulation I receive the following timeout error: An error...

01 March 2021 2,327 1 View

Anyone found any research papers on solar furnace design calculations (for solar concentration)?

I am thinking about working on solar furnace with heliostats that concentrate sunlight and heat molten salt, but currently no luck with research. Not a lot of papers based on the subject. (check...

01 March 2021 5,023 5 View

How to size battery banks?

I am designing a small grid connected solar PV power-plant. As the battery's capacity is specified in Ah and demand in kWh. What is the best way to size the battery bank? I have battery price in...

28 February 2021 1,638 3 View

How to eliminate Steady state error from Reinforcement learning genetic algorithm code?

The following code (see 1st 2 images attached) is used to produce PID controller values that are designed to control the system (G). The code finds the PID controller values (noted as k) by using...

28 February 2021 6,560 14 View

How to prevent ANFIS Model from negative prediction values in MATLAB?

I have input and output data set for "ANFIS modeling in MATLAB", and I am getting some negative predicted values of output in testing. However, the predicted values of output in training are...

28 February 2021 3,459 3 View

How to design a boost converter for a mppt controller?

I have a doubt on how to select the inductor and capacitor value when I want to implement MPPT controller. This is because we always take a maximum output voltage and current but in this case, we...

28 February 2021 3,637 2 View

Mediation path analysis - Can I run two seperate models?

I am wanting to run a serial mediation model with 2 x IVs, 2 x MVs, and 3 DPs (all continuous). Is it problematic to run 2 different models for each IV, keeping the MVs and DPs the same in each...

27 February 2021 5,681 3 View