Dear Jason
Thank you for the prompt reply.
In fact, 4 grids are used only for simple demonstration of the problem. My intention is to generate a horizontal shear instead of only vertical one.
If I am using more grids as you suggested, e.g. 15x15 in TurbSim, and 3x3 in user time series, the settings will look like
[code]---------TurbSim v2.00.* Input File------------------------
for user-defined time series input
---------Runtime Options-----------------------------------
True Echo - Echo input data to .ech (flag)
43456 RandSeed1 - First random seed (-2147483648 to 2147483647)
“RanLux” RandSeed2 - Second random seed (-2147483648 to 2147483647) for intrinsic pRNG, or an alternative pRNG: “RanLux” or “RNSNLW”
False WrBHHTP - Output hub-height turbulence parameters in binary form? (Generates RootName.bin)
False WrFHHTP - Output hub-height turbulence parameters in formatted form? (Generates RootName.dat)
False WrADHH - Output hub-height time-series data in AeroDyn form? (Generates RootName.hh)
True WrADFF - Output full-field time-series data in TurbSim/AeroDyn form? (Generates RootName.bts)
False WrBLFF - Output full-field time-series data in BLADED/AeroDyn form? (Generates RootName.wnd)
False WrADTWR - Output tower time-series data? (Generates RootName.twr)
False WrFMTFF - Output full-field time-series data in formatted (readable) form? (Generates RootName.u, RootName.v, RootName.w)
False WrACT - Output coherent turbulence time steps in AeroDyn form? (Generates RootName.cts)
False Clockwise - Clockwise rotation looking downwind? (used only for full-field binary files - not necessary for AeroDyn)
0 ScaleIEC - Scale IEC turbulence models to exact target standard deviation? [0=no additional scaling; 1=use hub scale uniformly; 2=use individual scales]
--------Turbine/Model Specifications-----------------------
15 NumGrid_Z - Vertical grid-point matrix dimension
15 NumGrid_Y - Horizontal grid-point matrix dimension
0.05 TimeStep - Time step [seconds]
0.2 AnalysisTime - Length of analysis time series [seconds] (program will add time if necessary: AnalysisTime = MAX(AnalysisTime, UsableTime+GridWidth/MeanHHWS) )
“ALL” UsableTime - Usable length of output time series [seconds] (program will add GridWidth/MeanHHWS seconds unless UsableTime is “ALL”)
90 HubHt - Hub height [m] (should be > 0.5GridHeight)
150 GridHeight - Grid height [m]
150 GridWidth - Grid width [m] (should be >= 2(RotorRadius+ShaftLength))
0 VFlowAng - Vertical mean flow (uptilt) angle [degrees]
0 HFlowAng - Horizontal mean flow (skew) angle [degrees]
--------Meteorological Boundary Conditions-------------------
“TIMESR” TurbModel - Turbulence model (“IECKAI”,“IECVKM”,“GP_LLJ”,“NWTCUP”,“SMOOTH”,“WF_UPW”,“WF_07D”,“WF_14D”,“TIDAL”,“API”,“USRINP”,“TIMESR”, or “NONE”)
“UserTimeSeries/Test.TimeSer” UserFile - Name of the file that contains inputs for user-defined spectra or time series inputs (used only for “USRINP” and “TIMESR” models)
1 IECstandard - Number of IEC 61400-x standard (x=1,2, or 3 with optional 61400-1 edition number (i.e. “1-Ed2”) )
“A” IECturbc - IEC turbulence characteristic (“A”, “B”, “C” or the turbulence intensity in percent) (“KHTEST” option with NWTCUP model, not used for other models)
“NTM” IEC_WindType - IEC turbulence type (“NTM”=normal, “xETM”=extreme turbulence, “xEWM1”=extreme 1-year wind, “xEWM50”=extreme 50-year wind, where x=wind turbine class 1, 2, or 3)
“default” ETMc - IEC Extreme Turbulence Model “c” parameter [m/s]
“default” WindProfileType - Velocity profile type (“LOG”;“PL”=power law;“JET”;“H2L”=Log law for TIDAL model;“API”;“USR”;“TS”;“IEC”=PL on rotor disk, LOG elsewhere; or “default”)
“unused” ProfileFile - Name of the file that contains input profiles for WindProfileType=“USR” and/or TurbModel=“USRVKM” [-]
90 RefHt - Height of the reference velocity (URef) [m]
12.5 URef - Mean (total) velocity at the reference height [m/s] (or “default” for JET velocity profile) [must be 1-hr mean for API model; otherwise is the mean over AnalysisTime seconds]
350 ZJetMax - Jet height [m] (used only for JET velocity profile, valid 70-490 m)
“default” PLExp - Power law exponent [-] (or “default”)
“default” Z0 - Surface roughness length [m] (or “default”)
--------Non-IEC Meteorological Boundary Conditions------------
“default” Latitude - Site latitude [degrees] (or “default”)
0.05 RICH_NO - Gradient Richardson number [-]
“default” UStar - Friction or shear velocity [m/s] (or “default”)
“default” ZI - Mixing layer depth [m] (or “default”)
“default” PC_UW - Hub mean u’w’ Reynolds stress [m^2/s^2] (or “default” or “none”)
“default” PC_UV - Hub mean u’v’ Reynolds stress [m^2/s^2] (or “default” or “none”)
“default” PC_VW - Hub mean v’w’ Reynolds stress [m^2/s^2] (or “default” or “none”)
--------Spatial Coherence Parameters----------------------------
“NONE” SCMod1 - u-component coherence model (“GENERAL”,“IEC”,“API”,“NONE”, or “default”)
“NONE” SCMod2 - v-component coherence model (“GENERAL”,“IEC”,“NONE”, or “default”)
“NONE” SCMod3 - w-component coherence model (“GENERAL”,“IEC”,“NONE”, or “default”)
“default” InCDec1 - u-component coherence parameters for general or IEC models [-, m^-1] (e.g. “10.0 0.3e-3” in quotes) (or “default”)
“default” InCDec2 - v-component coherence parameters for general or IEC models [-, m^-1] (e.g. “10.0 0.3e-3” in quotes) (or “default”)
“default” InCDec3 - w-component coherence parameters for general or IEC models [-, m^-1] (e.g. “10.0 0.3e-3” in quotes) (or “default”)
0 CohExp - Coherence exponent for general model [-] (or “default”)
--------Coherent Turbulence Scaling Parameters-------------------
“.\EventData” CTEventPath - Name of the path where event data files are located
“les” CTEventFile - Type of event files (“LES”, “DNS”, or “RANDOM”)
true Randomize - Randomize the disturbance scale and locations? (true/false)
1 DistScl - Disturbance scale [-] (ratio of event dataset height to rotor disk). (Ignored when Randomize = true.)
0.5 CTLy - Fractional location of tower centerline from right [-] (looking downwind) to left side of the dataset. (Ignored when Randomize = true.)
0.5 CTLz - Fractional location of hub height from the bottom of the dataset. [-] (Ignored when Randomize = true.)
10 CTStartTime - Minimum start time for coherent structures in RootName.cts [seconds]
====================================================
! NOTE: Do not add or remove any lines in this file!
====================================================[/code]
[code]--------------TurbSim v2.00.* User Time Series Input File-----------------------
Time series input from Y:/wind/windweb/MetData/135mData/M4Twr/20Hz/mat/2014/01/13/01134_16_40_00_013.mat. Using rotated series
1 nComp - Number of velocity components in the file (1=u component only; 2=u & v components; 3=u,v,w) [if < 3 other components will be generated using values from input file]
9 nPoints - Number of time series points contained in this file (-)
5 RefPtID - Index of the reference point (1-nPoints)
Pointyi Pointzi ! listed in order of increasing height
(m) (m)
-75 15
0 15
75 15
-75 90
0 90
75 90
-75 165
0 165
75 165
--------Time Series-------------------------------------------------------------
Elapsed Time Point01u Point02u Point03u Point04u Point05u Point06u Point07u Point08u Point09u
(s) (m/s) (m/s) (m/s) (m/s) (m/s) (m/s) (m/s) (m/s) (m/s)
0.0000 1 2 3 1 2 3 1 2 3
0.0500 1 2 3 1 2 3 1 2 3
0.1000 1 2 3 1 2 3 1 2 3
0.1500 1 2 3 1 2 3 1 2 3
0.2000 1 2 3 1 2 3 1 2 3
[/code]
If I am right, this is supposed to generate a wind field with 1m/s - 3m/s wind shear from left to right, but the result shows
.
This is my confusion. Thanks
Kind regards
Yulin
