Good afternoon, is it possible to estimate the heat flow (wm ^ -2) versus the time (s) entering the experimental temperatures in Celsis versus the time (inverse problem) using ANSYS and Direct Optimization? My 3D domain is a solid one. The following are the required information. Properties of solid (3D): Thermal conductivity k: 43.1 W/(m.K) Density rho: 14900 kg/m^3 Heat capacity at constant pressure Cp: 332.94 J/(kg.K) The files "Termocouple 1.txt" and "Termocouple 2.txt" contain the temperatures measured experimentally, in Celsius, versus the time in seconds. The "Measured Heat flux for comparison.txt" file contains the experimental measured heat flow and can be used for comparison with the numerical inverse technique that will estimate the heat flow (W m^-2) versus time (s). The files "solid_domain.igs" or "solid_domain.x_b" show the drawing made in SolidWorks for use in numerical simulation, drawn in mm. The "Results using COMSOL.bmp" file presents the comparison of the heat flows estimated by the Nelder-Mead optimization technique and the heat flow measured experimentally. Domain Point Probe 1: Coordinates of thermocouple 1: x: 0.0043 m; y: 0.0035 m; z: 0.0047 m Domain Point Probe 2: Coordinates of thermocouple 2: x: 0.0035 m; y: 0.0089 m; z: 0.0047 m Total sample size (x, y, z): 0.0127 x 0.0127 x 0.0047 (m) = 1.27 x 1.27 x 0.47 (cm) = 12.7 x 12.7 x 4.7 (mm) Data acquisition interval = 0.222000 seconds Initial sample temperature = 29.2 (ºC) = 302.35 K Number of thermocouples = 2 Coordinate (s) of the thermocouple (s): x = 0.0043 (m) y = 0.0035 (m) z = 0.0047 (m) x = 4.3 (mm) y = 3.5 (mm) z = 4.7 (mm) x = 0.0035 (m) y = 0.0089 (m) z = 0.0047 (m) x = 3.5 (mm) y = 8.9 (mm) z = 4.7 (mm) Area (s) occupied by the heat flow (s) xo = 0 x = 0.0104 m yo = 0 y = 0.0104 m zo = 0.0 z = 0.0 Consider the convection boundary conditions with h = 20 ºC and Tinfinite = 29.221823 ºC. Ie: heat transfer coefficient h: 20 W/(m^2.K) External temperature Text: 29.221823 ºC I appreciate it.
Hello, Nice overview! One question: when you are in the design modeler you select the parameters. Then you turn on the module "Response Surface" and WB calculates for different parameters the desired outputs - for example stresses or deformations. The design points are chosen by WB based on the type of design, CCD or latin hypercube. Ansys default option is CCD. The problem is that the range of input parameters is small; how can you say to WB "do the design of experiments within a wider interval"?
I am doing an optimisation where there are 4 dimensions that I want to change to minimise an extension. I can only see a way to set relations between these parameters once you get to the optimsation step I.E. after the response surface is generated. This is causing me problems as the response surface in the design of experiments stage is attempting to use an invalid combination of these parameters which could be fixed if I could find another way to set relations between parameters. Any ideas?
I need your help. I am doing optimization of a problem transient and I need optimizar parameters in cfx pre. Can you help me? I just see optimization of geometry paramenters and not see optimization of de flow rate for example. Thanks!
Thanks for sharing your work, I would like to know that can we easily implement DoE incase of CFD analysis? you might know that CFD takes very lengthy iterations, and each iteration takes up 2-3 days, so if it performs calc for each design point (for 10 design points), imagine how the life would be , with 3 x10 =30 days simulation for one geometry. pls comment
I am Doing optimisation in CFD using CFX, The problem I am solving is a transient with total 200-time steps. The output is the force which I am calculating through CEL expression. This force is my output. My question is, in DOE for each design point which times steps output force it is taking? Could you please reply if you know the solution, I am trying this for many days but the results are undesirable.
Good video. I am currently completing my dissertation with regards to structural mass optimization. Could you possible reply with some advice on how to complete optimization for mass as opposed to thickness? (I am having trouble with looping the parameters back into the static structural analysis). Many Thanks.
Welcome. I do not know which version of Ansys Workbench you are using (it can be a limited version of the program), but by default check in Ansys Workbench Toolbox (left side window) at the bottom - View / Customize if in the Design Exploration area the fields of individual optimization methods are selected
Thanks. Any reading material
Good afternoon, is it possible to estimate the heat flow (wm ^ -2) versus the time (s) entering the experimental temperatures in Celsis versus the time (inverse problem) using ANSYS and Direct Optimization? My 3D domain is a solid one.
The following are the required information.
Properties of solid (3D):
Thermal conductivity k: 43.1 W/(m.K)
Density rho: 14900 kg/m^3
Heat capacity at constant pressure Cp: 332.94 J/(kg.K)
The files "Termocouple 1.txt" and "Termocouple 2.txt" contain the temperatures measured experimentally, in Celsius, versus the time in seconds.
The "Measured Heat flux for comparison.txt" file contains the experimental measured heat flow and can be used for comparison with the numerical inverse technique that will estimate the heat flow (W m^-2) versus time (s).
The files "solid_domain.igs" or "solid_domain.x_b" show the drawing made in SolidWorks for use in numerical simulation, drawn in mm.
The "Results using COMSOL.bmp" file presents the comparison of the heat flows estimated by the Nelder-Mead optimization technique and the heat flow measured experimentally.
Domain Point Probe 1:
Coordinates of thermocouple 1:
x: 0.0043 m; y: 0.0035 m; z: 0.0047 m
Domain Point Probe 2:
Coordinates of thermocouple 2:
x: 0.0035 m; y: 0.0089 m; z: 0.0047 m
Total sample size (x, y, z):
0.0127 x 0.0127 x 0.0047 (m) = 1.27 x 1.27 x 0.47 (cm) =
12.7 x 12.7 x 4.7 (mm)
Data acquisition interval = 0.222000 seconds
Initial sample temperature = 29.2 (ºC) = 302.35 K
Number of thermocouples = 2
Coordinate (s) of the thermocouple (s):
x = 0.0043 (m) y = 0.0035 (m) z = 0.0047 (m)
x = 4.3 (mm) y = 3.5 (mm) z = 4.7 (mm)
x = 0.0035 (m) y = 0.0089 (m) z = 0.0047 (m)
x = 3.5 (mm) y = 8.9 (mm) z = 4.7 (mm)
Area (s) occupied by the heat flow (s)
xo = 0 x = 0.0104 m
yo = 0 y = 0.0104 m
zo = 0.0 z = 0.0
Consider the convection boundary conditions with h = 20 ºC and Tinfinite = 29.221823 ºC. Ie:
heat transfer coefficient h: 20 W/(m^2.K)
External temperature Text: 29.221823 ºC
I appreciate it.
Hello, Nice overview!
One question: when you are in the design modeler you select the parameters. Then you turn on the module "Response Surface" and WB calculates for different parameters the desired outputs - for example stresses or deformations. The design points are chosen by WB based on the type of design, CCD or latin hypercube. Ansys default option is CCD. The problem is that the range of input parameters is small; how can you say to WB "do the design of experiments within a wider interval"?
HI,we had conducted a non linear analysis on RC beam. we would like to know how to visiualized cracks. thanks
I am doing an optimisation where there are 4 dimensions that I want to change to minimise an extension.
I can only see a way to set relations between these parameters once you get to the optimsation step I.E. after the response surface is generated.
This is causing me problems as the response surface in the design of experiments stage is attempting to use an invalid combination of these parameters which could be fixed if I could find another way to set relations between parameters.
Any ideas?
I need your help to optimize in FLUENT ...i want to iterate fluid velocity and rotational velocity and then the parameters of the object
hey! this has helped me alot!
How would i get a picture of the chnaged/optomised geometry at the end of the process?
Thanks
Tanks!!
This tutorial helped me a lot in my dissertation
I need your help. I am doing optimization of a problem transient and I need optimizar parameters in cfx pre. Can you help me?
I just see optimization of geometry paramenters and not see optimization of de flow rate for example. Thanks!
Thanks for sharing your work, I would like to know that can we easily implement DoE incase of CFD analysis? you might know that CFD takes very lengthy iterations, and each iteration takes up 2-3 days, so if it performs calc for each design point (for 10 design points), imagine how the life would be , with 3 x10 =30 days simulation for one geometry. pls comment
I am Doing optimisation in CFD using CFX, The problem I am solving is a transient with total 200-time steps. The output is the force which I am calculating through CEL expression. This force is my output. My question is, in DOE for each design point which times steps output force it is taking?
Could you please reply if you know the solution, I am trying this for many days but the results are undesirable.
Good video. I am currently completing my dissertation with regards to structural mass optimization. Could you possible reply with some advice on how to complete optimization for mass as opposed to thickness? (I am having trouble with looping the parameters back into the static structural analysis).
Many Thanks.
I have made a simple optimalization analysis with mass parameter (and few more) check this Mass Optimization with Ansys Workbench
regards
Thankyou for the response, this should prove to be really usefull.
Thanks again!
Hello!
I'm trying to optimize some parts, but i can't see the ''midsurface'' under the geometry list can you help please ?
thanks a lot :)
how to optimize trusses?
Also is this video supposed to have sound? I get no audio at all. This is not a hardware problem, other youtube videos are fine.
Very good one..is it possible to use this kind of optimization with Ansys CFX ?
have you worked with CFX optimization?
It seems my response surface is not activated while installing. How do i activate it?
Welcome.
I do not know which version of Ansys Workbench you are using (it can be a limited version of the program), but by default check in Ansys Workbench Toolbox (left side window) at the bottom - View / Customize if in the Design Exploration area the fields of individual optimization methods are selected
@@friedrichpiotr ok, i will try. Thank you.
Thanks A lot.