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C++ BCPtr::addZeroMeanConstraint方法代码示例

本文整理汇总了C++中BCPtr::addZeroMeanConstraint方法的典型用法代码示例。如果您正苦于以下问题:C++ BCPtr::addZeroMeanConstraint方法的具体用法?C++ BCPtr::addZeroMeanConstraint怎么用?C++ BCPtr::addZeroMeanConstraint使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在BCPtr的用法示例。


在下文中一共展示了BCPtr::addZeroMeanConstraint方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: main


//.........这里部分代码省略.........
  VarPtr tau2 = vf->testVar("tau2", HDIV);
  VarPtr q = vf->testVar("q", HGRAD);

  BFPtr bf = Teuchos::rcp( new BF(vf) );

  bf->addTerm(1./mu*sigma1, tau1);
  bf->addTerm(1./mu*sigma2, tau2);
  bf->addTerm(u1, tau1->div());
  bf->addTerm(u2, tau2->div());
  bf->addTerm(-u1hat, tau1->dot_normal());
  bf->addTerm(-u2hat, tau2->dot_normal());

  bf->addTerm(sigma1, v1->grad());
  bf->addTerm(sigma2, v2->grad());
  bf->addTerm(-p, v1->dx());
  bf->addTerm(-p, v2->dy());
  bf->addTerm(t1c, v1);
  bf->addTerm(t2c, v2);
  bf->addTerm(mu*permInv*u1, v1);
  bf->addTerm(mu*permInv*u2, v2);

  bf->addTerm(-u1, q->dx());
  bf->addTerm(-u2, q->dy());
  bf->addTerm(u1hat, q->times_normal_x());
  bf->addTerm(u2hat, q->times_normal_y());

  RHSPtr rhs = RHS::rhs();

  BCPtr bc = BC::bc();

  SpatialFilterPtr y_equals_one = SpatialFilter::matchingY(1.0);
  SpatialFilterPtr y_equals_zero = SpatialFilter::matchingY(0);
  SpatialFilterPtr x_equals_one = SpatialFilter::matchingX(1.0);
  SpatialFilterPtr x_equals_zero = SpatialFilter::matchingX(0.0);
  bc->addDirichlet(u1hat, y_equals_zero, u1_exact);
  bc->addDirichlet(u2hat, y_equals_zero, u2_exact);
  bc->addDirichlet(u1hat, x_equals_zero, u1_exact);
  bc->addDirichlet(u2hat, x_equals_zero, u2_exact);
  bc->addDirichlet(u1hat, y_equals_one, u1_exact);
  bc->addDirichlet(u2hat, y_equals_one, u2_exact);
  bc->addDirichlet(u1hat, x_equals_one, u1_exact);
  bc->addDirichlet(u2hat, x_equals_one, u2_exact);
  bc->addZeroMeanConstraint(p);

  MeshPtr mesh = MeshFactory::quadMesh(bf, k+1, delta_k, 1, 1, 4, 4);

  map<string, IPPtr> brinkmanIPs;
  brinkmanIPs["Graph"] = bf->graphNorm();

  brinkmanIPs["Decoupled"] = Teuchos::rcp(new IP);
  brinkmanIPs["Decoupled"]->addTerm(tau1);
  brinkmanIPs["Decoupled"]->addTerm(tau2);
  brinkmanIPs["Decoupled"]->addTerm(tau1->div());
  brinkmanIPs["Decoupled"]->addTerm(tau2->div());
  brinkmanIPs["Decoupled"]->addTerm(permInv*v1);
  brinkmanIPs["Decoupled"]->addTerm(permInv*v2);
  brinkmanIPs["Decoupled"]->addTerm(v1->grad());
  brinkmanIPs["Decoupled"]->addTerm(v2->grad());
  brinkmanIPs["Decoupled"]->addTerm(q);
  brinkmanIPs["Decoupled"]->addTerm(q->grad());

  // brinkmanIPs["CoupledRobust"] = Teuchos::rcp(new IP);
  // brinkmanIPs["CoupledRobust"]->addTerm(tau->div()-beta*v->grad());
  // brinkmanIPs["CoupledRobust"]->addTerm(Function<double>::min(one/Function<double>::h(),Function<double>::constant(1./sqrt(epsilon)))*tau);
  // brinkmanIPs["CoupledRobust"]->addTerm(sqrt(epsilon)*v->grad());
  // brinkmanIPs["CoupledRobust"]->addTerm(beta*v->grad());
  // brinkmanIPs["CoupledRobust"]->addTerm(Function<double>::min(sqrt(epsilon)*one/Function<double>::h(),one)*v);

  IPPtr ip = brinkmanIPs[norm];

  SolutionPtr soln = TSolution<double>::solution(mesh, bc, rhs, ip);

  double threshold = 0.20;
  RefinementStrategy refStrategy(soln, threshold);

  ostringstream refName;
  refName << "brinkman";
  HDF5Exporter exporter(mesh,refName.str());

  for (int refIndex=0; refIndex <= numRefs; refIndex++)
  {
    soln->solve(false);

    double energyError = soln->energyErrorTotal();
    if (commRank == 0)
    {
      // if (refIndex > 0)
      // refStrategy.printRefinementStatistics(refIndex-1);
      cout << "Refinement:\t " << refIndex << " \tElements:\t " << mesh->numActiveElements()
           << " \tDOFs:\t " << mesh->numGlobalDofs() << " \tEnergy Error:\t " << energyError << endl;
    }

    exporter.exportSolution(soln, refIndex);

    if (refIndex != numRefs)
      refStrategy.refine();
  }

  return 0;
}
开发者ID:CamelliaDPG,项目名称:Camellia,代码行数:101,代码来源:BrinkmanDriver.cpp


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