Search found 13 matches

by Tadele.Wondmagegn
Mon Jun 06, 2016 2:10 am
Forum: Computer-Aided Engineering Software Tools
Topic: MLife Simulation
Replies: 3
Views: 963

Re: MLife Simulation

Sorry, I could not attach as I reached the quota. below are the errors messages... subscript indices must either be real positive integers or logicals. Error in compute_fatigue_per_DEL_type (line 145) binnedCycleCounts(index) = binnedCycleCounts(index) + cycleCounts(c); Error in compute_goodman_fati...
by Tadele.Wondmagegn
Mon Jun 06, 2016 2:04 am
Forum: Computer-Aided Engineering Software Tools
Topic: MLife Simulation
Replies: 3
Views: 963

Re: MLife Simulation

Dear Jason,

Please find attached picture.
by Tadele.Wondmagegn
Wed Jun 01, 2016 10:16 am
Forum: Computer-Aided Engineering Software Tools
Topic: MLife Simulation
Replies: 3
Views: 963

MLife Simulation

Hi All, I have been using MLife for fatigue analysis, but i encountered a problem -when changing DEL_Type to 1 and the GoodmanFlag to with goodman correction, MatLab will not proceed simulating it stops with some error messages. Anyone has faced same problem? Or, please help me out of this problem. ...
by Tadele.Wondmagegn
Sun Feb 28, 2016 4:37 am
Forum: Inflow Turbulence
Topic: Effect of NumGrid_Z and NumGrid_Y
Replies: 13
Views: 8246

Re: Effect of NumGrid_Z and NumGrid_Y

Hi Bonnie and all, I found my problem. MY MESS!! It was the way I put the value of TI (I mean I have been setting it in fraction like 16/100=0.16 instead of just 16...). Sorry Bonnie for bothering you with my mess and confused results; I should have think and check twice before I post it as a proble...
by Tadele.Wondmagegn
Sat Feb 27, 2016 10:22 am
Forum: Inflow Turbulence
Topic: Effect of NumGrid_Z and NumGrid_Y
Replies: 13
Views: 8246

Re: Effect of NumGrid_Z and NumGrid_Y

Hi Bonnie, the u-comp is the simulation result for the u component velocity- like 'Kaimal.u'. The result for each time step (speeds at each grid points of Y and Z coordinate) for example timestep 0.00, 0.05... is almost identical, in my case. I used 16% TI then changed it to 20% then 24% to see the ...
by Tadele.Wondmagegn
Tue Feb 23, 2016 9:48 am
Forum: Inflow Turbulence
Topic: Effect of NumGrid_Z and NumGrid_Y
Replies: 13
Views: 8246

Re: Effect of NumGrid_Z and NumGrid_Y

Hi Bonnie, Thank you for your help and suggestion. I have been working on the simulation varying the turbulence characteristics and type (don't set any shear as I am using IEC model). When I set IEC turbulence characteristics to 'TI in percent' and the type to 'NTM' (as NTM is must when choosing 'TI...
by Tadele.Wondmagegn
Thu Feb 18, 2016 9:04 am
Forum: Inflow Turbulence
Topic: Effect of NumGrid_Z and NumGrid_Y
Replies: 13
Views: 8246

Re: Effect of NumGrid_Z and NumGrid_Y

Hi Bonnie, I exported/pasted the u comp velocity in excel to get the contour plot and have a look the velocity distribution on the plane. However, my contour plot shows most of high velocities are accumulated at the lower height than the at the very highest point of the map (Grid point). For me it s...
by Tadele.Wondmagegn
Thu Feb 11, 2016 6:47 am
Forum: Inflow Turbulence
Topic: Effect of NumGrid_Z and NumGrid_Y
Replies: 13
Views: 8246

Re: Effect of NumGrid_Z and NumGrid_Y

Thank you very much!!
by Tadele.Wondmagegn
Tue Feb 09, 2016 11:59 pm
Forum: Inflow Turbulence
Topic: Effect of NumGrid_Z and NumGrid_Y
Replies: 13
Views: 8246

Re: Effect of NumGrid_Z and NumGrid_Y

*Single blade*
by Tadele.Wondmagegn
Tue Feb 09, 2016 11:58 pm
Forum: Inflow Turbulence
Topic: Effect of NumGrid_Z and NumGrid_Y
Replies: 13
Views: 8246

Re: Effect of NumGrid_Z and NumGrid_Y

Hi Bonnie, Sure, according to the equation the height of the points will determine their mean wind speed, but I was expecting the same result at the origin (0 0) what ever the grid size is, since the simulation is at the same hub height. So, is my assumption wrong? 2- Another question, I am conducti...
by Tadele.Wondmagegn
Mon Nov 09, 2015 11:53 am
Forum: Computer-Aided Engineering Software Tools
Topic: Help running FAST v8 for the first time
Replies: 79
Views: 34107

Re: Help running FAST v8 for the first time

Dear Jason,

Thank you for your help. It seams I resolved the problem. Now, I able to execute the input files. I really appreciate your kind help.

Best regards

Wondmagegn
by Tadele.Wondmagegn
Mon Nov 09, 2015 7:22 am
Forum: Computer-Aided Engineering Software Tools
Topic: Help running FAST v8 for the first time
Replies: 79
Views: 34107

Re: Help running FAST v8 for the first time

Dear Jason, Thank you for your replay. Yes, I did read the instruction in 'ReadMe' 'Normal simulation...'. That is why I moved the files with extension .fst from CertTest folder to bin folder where the executable is located; as the instruction says ''...it easiest to open up your command window in t...
by Tadele.Wondmagegn
Sat Nov 07, 2015 11:58 am
Forum: Computer-Aided Engineering Software Tools
Topic: Help running FAST v8 for the first time
Replies: 79
Views: 34107

Re: Help running FAST v8 for the first time

Dear Jason, I am very new for FAST simulation code. I am working on 'Optimization of wind turbine loads for maximum power output and low fatigue loading'. I came across to FAST as most literature used FAST code to compute the performance of wind turbine. I am using 64 bit windows pc. I have download...

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