diff --git a/src/VirtualFluids_GPU/DataStructureInitializer/GridProvider.cpp b/src/VirtualFluids_GPU/DataStructureInitializer/GridProvider.cpp
index 7f6a2a15e55d4963c33669422bb6325af8221a42..f3e83c03cf099c4a804f52671a1049353c70b641 100644
--- a/src/VirtualFluids_GPU/DataStructureInitializer/GridProvider.cpp
+++ b/src/VirtualFluids_GPU/DataStructureInitializer/GridProvider.cpp
@@ -48,11 +48,11 @@ void GridProvider::setInitalNodeValues(const int numberOfNodes, const int level)
         const real coordZ = para->getParH(level)->coordZ_SP[j];
         const real velocity = para->getVelocity();
 
-        para->getParH(level)->rho_SP[j] = real((velocity * velocity) * 3.0 / 4.0 * (cos(coordX * 4.0*PI / gridX) + cos(coordZ * 4.0*PI / gridZ))) * gridZ / gridX;
+        para->getParH(level)->rho_SP[j] = real(0.0); //real((velocity * velocity) * 3.0 / 4.0 * (cos(coordX * 4.0*PI / gridX) + cos(coordZ * 4.0*PI / gridZ))) * gridZ / gridX;
 
         para->getParH(level)->vy_SP[j] = real(0.0);
-        para->getParH(level)->vx_SP[j] = real( velocity * sin(coordX * 2.0*PI / gridX) * cos(coordZ * 2.0*PI / gridZ)) + uAdvect * (1.0 + para->getParH(level)->rho_SP[j]);
-        para->getParH(level)->vz_SP[j] = real(-velocity * cos(coordX * 2.0*PI / gridX) * sin(coordZ * 2.0*PI / gridZ)); // *(real)(gridZ) / (real)(gridX);
+        para->getParH(level)->vx_SP[j] = real(0.0); //real( velocity * sin(coordX * 2.0*PI / gridX) * cos(coordZ * 2.0*PI / gridZ)) + uAdvect * (1.0 + para->getParH(level)->rho_SP[j]);
+        para->getParH(level)->vz_SP[j] = real(0.0); //real(-velocity * cos(coordX * 2.0*PI / gridX) * sin(coordZ * 2.0*PI / gridZ)); // *(real)(gridZ) / (real)(gridX);
 
        //para->getParH(level)->vx_SP[j] = 0.001;
        //para->getParH(level)->vy_SP[j] = 0.0;
diff --git a/src/VirtualFluids_GPU/LBM/Simulation.cpp b/src/VirtualFluids_GPU/LBM/Simulation.cpp
index 7d2a5d00fb8f90a5cdfaed8404fe5922fe963482..062ead70a3805706eaacf71dfd23ba3af9cbdc38 100644
--- a/src/VirtualFluids_GPU/LBM/Simulation.cpp
+++ b/src/VirtualFluids_GPU/LBM/Simulation.cpp
@@ -807,13 +807,13 @@ void Simulation::run()
 							//para->getParD(0)->neighborX_SP,    para->getParD(0)->neighborY_SP, para->getParD(0)->neighborZ_SP,
 							//para->getParD(0)->size_Mat_SP,     para->getParD(0)->evenOrOdd);
 		     // getLastCudaError("QVelDevComp27 execution failed");
-		      //QVelDevCompZeroPress27(para->getParD(0)->numberofthreads, para->getParD(0)->nx,             para->getParD(0)->ny,
-								//	 para->getParD(0)->Qinflow.Vx,      para->getParD(0)->Qinflow.Vy,     para->getParD(0)->Qinflow.Vz,
-								//	 para->getParD(0)->d0SP.f[0],       para->getParD(0)->Qinflow.k,      para->getParD(0)->Qinflow.q27[0], 
-								//	 para->getParD(0)->kInflowQ,        para->getParD(0)->Qinflow.kArray, para->getParD(0)->omega,
-								//	 para->getParD(0)->neighborX_SP,    para->getParD(0)->neighborY_SP,   para->getParD(0)->neighborZ_SP,
-								//	 para->getParD(0)->size_Mat_SP,     para->getParD(0)->evenOrOdd);
-		      //getLastCudaError("QVelDevComp27 execution failed");
+		      QVelDevCompZeroPress27(para->getParD(0)->numberofthreads, para->getParD(0)->nx,             para->getParD(0)->ny,
+									 para->getParD(0)->Qinflow.Vx,      para->getParD(0)->Qinflow.Vy,     para->getParD(0)->Qinflow.Vz,
+									 para->getParD(0)->d0SP.f[0],       para->getParD(0)->Qinflow.k,      para->getParD(0)->Qinflow.q27[0], 
+									 para->getParD(0)->kInflowQ,        para->getParD(0)->Qinflow.kArray, para->getParD(0)->omega,
+									 para->getParD(0)->neighborX_SP,    para->getParD(0)->neighborY_SP,   para->getParD(0)->neighborZ_SP,
+									 para->getParD(0)->size_Mat_SP,     para->getParD(0)->evenOrOdd);
+		      getLastCudaError("QVelDevComp27 execution failed");
 
 			  ////////////////////////////////////////////////////////////////////////////
 		      //QVeloDevEQ27(para->getParD(0)->numberofthreads,
diff --git a/targets/apps/LBM/DrivenCavity/configDrivenCavity.txt b/targets/apps/LBM/DrivenCavity/configDrivenCavity.txt
index 5b0aa6de2da4a59a2fc0cf7a3b3f42e2ae8d305e..a6793f0b389330ba814b5bc183e1d85e8323aacf 100644
--- a/targets/apps/LBM/DrivenCavity/configDrivenCavity.txt
+++ b/targets/apps/LBM/DrivenCavity/configDrivenCavity.txt
@@ -24,11 +24,11 @@ NOGL=1
 #LBM Version
 ##################################################
 D3Qxx=27
-MainKernelName=CumulantAA2016CompSP27
+#MainKernelName=CumulantAA2016CompSP27
 
 ##################################################
 #simulation parameter
 ##################################################
-TimeEnd=10000
+TimeEnd=100000
 TimeOut=1000 
 TimeStartOut=0
\ No newline at end of file