How to solve design of experiments example?

Can you help with solving attached problem. C1 and C2 is two different materials. B1=1500 J/cm heat input B2=2000 J/cm heat input A1 is first case with three measurement of hardness of the...

31 December 2018 2,610 3 View

Criteria for achieving stationary state of heat exchange in laboratory measurement?

Are there recommended (standardized) definition of the criteria for achiving stationary conditions in a laboratory measurement of heat transfer in heat exchangers? I found in the literature some...

31 December 2017 1,987 14 View

Reversibile flow on outlet in ansys Fluent?

I make calculation of my model of finned heat exchangers by Ansys Fluent. Model is somewhat complicated and have abut 5 millions elements and 8 inflation's layers. I chose k-epsilon method for...

01 January 1970 5,112 16 View

How to define the air properties in the heat exchanger calculation: as constant or temperature dependent?

I calculate Heat exchanger air-water. the air is heated, the air at the entrance is about 20 C.Ansys offers the ability to define air properties (density, thermal conductivity, dynamic viscosity...

01 January 1970 9,785 3 View

How to import correct model for ANSYS FLUENT?

I made a model of the heat exchanger in SolidWorks. The goal is to make numerical simulation using ANSYS FLUENT (ver 15.0). So far I have not used the said program is likely to be adapted designed...

01 January 1970 5,090 4 View

What is difference beetwen scientist and engineers?

"Scientists investigate that which already is; Engineers create that which has never been." -- Albert Einstein What do you think about it?

01 January 1970 2,593 15 View

Is the power-point presentations realy more efficient than traditional blackboard use?

Power-point presentations are commonly used in teaching in recent times. One day, when there was no electricity, I did the student teaching using the (white)board. Reaction of students surprised...

01 January 1970 8,261 31 View

How do you write an effective abstract for a research paper?

It is very important to know how to write a good abstract whether it is a conference or a scientific article. In some published articles, the abstract and conclusion are almost same. How do you...

01 January 1970 4,256 3 View

How to solve divergence problem?

I am trying to solve my model of heat exchanger with finned tubes in Fluent. First variant with air velocity of 1 m/s converged after cca 550 iteration in k-epsilon model. Now I choose velocity of...

01 January 1970 8,952 16 View

How to define the air properties in the heat exchanger calculation: as constant or temperature dependent?

I calculate Heat exchanger air-water, the air is heated. The air at the entrance is about 20 C. Ansys offers the ability to define air properties (density, thermal conductivity, dynamic viscosity...

01 January 1970 6,592 4 View

Looking for Materials with high thermal expansion coefficient and high temperature resistance?

03 March 2021 8,272 1 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

Research on Supply Chain Management in Indian context?

Hi, I am planning to apply for the PhD degree in the Supply Chain Mgt. with specific area of "Cold Storage warehouses" during Pandemics and wars. Where lock downs and shut downs are frequent....

02 March 2021 285 2 View

What are the countries most affected by extreme rainfall as a result of climate change?

Increased heat, drought and insect outbreaks, all associated to climate change, have increased wildfires. Decreasing water supplies, declined agricultural yields, health impacts in cities owing to...

01 March 2021 7,168 9 View

How to show arrows over the streamlines in CFD-post?

I follow this to make streamlines like the photos attached below: (software- CFD post-processing) First I plot the 2D streamline over a surface "streamline 1". them I plot a vector by the...

01 March 2021 8,668 3 View

What is recommended for solid domain in ANSYS FLUENT?

Should I mesh the solid domain ? or should I use wall thickness? or Shell conduction? for Heat Transfer between two fluids of a Heat Exchanger. what is recommended?

01 March 2021 9,785 3 View

Can Virtual Servers (remote dekstop manager) run heavy ANSYS Fluent CFD simulation ?

I have a virtual machine. My host Pc specs are not that good thats why i went for virtual servers. so basically my host pc has 8gb of ram with nvidia quadro k2200 4Gb DDR5 GPU ,processor intel...

01 March 2021 8,415 1 View

Heat exchanger with liquid Nitrogen as coolant?

I want to cool Natural Gas from 195 Kelvin to 138 Klevin in a heat exchanger by using liquid nitrogen as the coolant medium. When entering the heat exchanger, the liquid nitrogen will have a...

01 March 2021 6,450 5 View

How can i resolve the "final solutuin is not converged" error in Comsol for my heat transfer simulation??

I have been trying to simulate heat transfer problem in Comsol 5.5 for long time but it always throw an error stating: "Failed to find a solution. Maximum number of Newton iterations...

28 February 2021 8,626 3 View

How to increase mesh quality of a cfd model in ansys fluent?

How can one improve mesh skewness, orthogonality, aspect ratio?

28 February 2021 7,730 3 View