OFtutorial1.C
源码解析
#include "fvCFD.H"
int main(int argc, char *argv[])
{
// Initialise OF case
#include "setRootCase.H"
// These two create the time system (instance called runTime) and fvMesh (instance called mesh).
#include "createTime.H"<details>
#include "createMesh.H"
// ---
// Get access to a custom dictionary
dictionary customDict;
const word dictName("customProperties");#定义一个word对象dictName,用来存放customProperties文件名称
// Create and input-output object - this holds the path to the dict and its name
IOobject dictIO
(
dictName, // name of the file
mesh.time().constant(), // path to where the file is
mesh, // reference to the mesh needed by the constructor
IOobject::MUST_READ // indicate that reading this dictionary is compulsory
);
// Check the if the dictionary is present and follows the OF format
if (!dictIO.typeHeaderOk<dictionary>(true))
FatalErrorIn(args.executable()) << "Cannot open specified refinement dictionary "
<< dictName << exit(FatalError);
// Initialise the dictionary object
customDict = IOdictionary(dictIO);
// ---
// Read various pieces of information from the main part of the dictionary
// Lookup which does not need to be told what type of variable we're looking for and
// uses the standard C++ stringstream syntax
word someWord;
customDict.lookup("someWord") >> someWord;
// This template method needs to know the type of the variable and can provide
// a default value if the entry is not found in the dictionary
scalar someScalar( customDict.lookupOrDefault<scalar>("someScalar", 1.0) );#定义一个scalar类对象someScalar, 这个字典对象customDict的lookup函数找到这个对象customDict的关键词"someScalar"的值,然后放入someScalar中去。如果没有,默认为1.
// A switch is a neat feature allowing boolean values to be read from a dict,
// it supports the OpenFOAM yes/on/true/1 and no/off/false/0 values automatically.
bool someBool ( customDict.lookupOrDefault<Switch>("someBool",true) );#定义一个bool类对象someBool,这个对象someBool通过字典对象customDict的lookup函数找到这个对象customDict的关键词" someBool "的值,然后放入someBool中去。
// Lists of values may also be read in the same way
List<scalar> someList ( customDict.lookup("someList") );
// This type of container is particularly interesting - it associates entries with
// given key values (here of word type but can be anything); useful when
// associating things by indices in a list is less handy
HashTable<vector,word> someHashTable ( customDict.lookup("someHashTable") );
// Summarise what's been read and print in the console
Info << nl << "Read the following:" << nl << nl
<< "someWord " << someWord << nl << nl
<< "someScalar " << someScalar << nl << nl
<< "someList " << someList << nl << nl
<< "someHashTable " << someHashTable << nl << nl
<< "someBool " << someBool << nl << nl
<< endl;
// ---
// Create a custom directory and write an output file
// Create the output path directory
fileName outputDir = mesh.time().path()/"postProcessing";
// Creathe the directory
mkDir(outputDir);
// File pointer to direct the output to
autoPtr<OFstream> outputFilePtr;
// Open the file in the newly created directory
outputFilePtr.reset(new OFstream(outputDir/"customOutputFile.dat"));
// Write stuff
outputFilePtr() << "# This is a header" << endl;
outputFilePtr() << "0 1 2 3 4 5" << endl;
// Append to the imported hash table and wirte it too
someHashTable.insert("newKey", vector(1., 0., 0.));
outputFilePtr() << someHashTable << endl;
Info<< "End\n" << endl;
return 0;
}
小结
该求解器读取customProperties文件中的内容并将需要的内容输出到customOutputFile.dat中
Make、Allwclean、Allwmake
这三个文件(目录)与上期OFtutorial00_helloWorld解析类似,此处不做赘述
testcase
组成如图所示
与OFtutorial00相同,没有调用system、constant(除customProperties外)中的文件,其内容可以忽略