Tecplot中的公式用法（国外英文资料）.doc

Tecplot中的公式用法（国外英文资料） BBS fluid mechanics and related field academic questions In the last few days, because of the problem, I looked at how to use the formula to modify the data in the Tecplot to help translate the relevant help. I hope it will help you. The Data - Alter - Specify that you can use the formula The Tecplot formula is as follows Lvalue = f (Rvalue1, Rvalue2, Rvalue3...) F () is similar to a FORTRAN expression, referring to the following. Lvalue is a reference to a variable that exists or does not exist, and RvalueN is a reference to a value (such as the usual number, variable value, or sequence number). There can be Spaces in the formula, but there is no space in the internal function name and variable name. If the variable specified by Lvalue exists in the current Frames data set, the formula will modify the value of the variable; Create a new variable if it doesnt exist. If the formula contains a syntax error, display the formula in an error dialog to tell the wrong location Each formula takes a line, and you can use multiple formulas, click on Compute, and each formula is used in order for all the specified zones and data. The formula variables and values Variables can be specified in three ways: in the order of the data file, the name or the letter code. You can reference variables in the order of variables in the data file, V1 is the first variable in the data file, V2 is the second, and so on. For example, to set the first variable in the data file equal to the sum of the second variable and the third variable. V1 is equal to V2 plus V3 Use this method to create new variables must specify the next sequence number, assuming that the data file are five variables that can create a new variable is equal to half of the fourth variable: V6 = V4/2 You cannot skip the middle number to specify a variable, otherwise the Tecplot pop-up error message dialog indicates that the variable name is invalid. You can also use a variable name specified, the method