diff --git a/P01_Flate_Plate_1_Part/bin/cfd_para.hypara b/P01_Flate_Plate_1_Part/bin/cfd_para.hypara
index 454e923a..c22beb18 100644
--- a/P01_Flate_Plate_1_Part/bin/cfd_para.hypara
+++ b/P01_Flate_Plate_1_Part/bin/cfd_para.hypara
@@ -921,7 +921,4 @@ int     numberOfMovingBodies       = 2;
 #########################################################################
 int isPlotVolumeField = 0;
 
-#########################################################################
-#                       Particle                                  #
-#########################################################################
-int iParticleModel = 0;
+
diff --git a/P01_Flate_Plate_1_Part/bin/cfd_para_subsonic.hypara b/P01_Flate_Plate_1_Part/bin/cfd_para_subsonic.hypara
index b4f01d79..f7c22230 100644
--- a/P01_Flate_Plate_1_Part/bin/cfd_para_subsonic.hypara
+++ b/P01_Flate_Plate_1_Part/bin/cfd_para_subsonic.hypara
@@ -134,7 +134,7 @@ double venkatCoeff      = 50.0;
 //               1 -- is recommended for structured solver.
 //             1-3 -- is recommended for unstructured solver.
 
-int iunsteady = 0;
+int iunsteady = 1;
 
 double CFLEnd = 100.0;
 
@@ -196,7 +196,3 @@ int limitVector = 0;
 
 double MUSCLCoefXk = 0.333333;
 
-#########################################################################
-#                       Particle                                  #
-#########################################################################
-int iParticleModel = 1;
\ No newline at end of file
diff --git a/P01_Flate_Plate_1_Part/bin/key.hypara b/P01_Flate_Plate_1_Part/bin/key.hypara
index 0400d3ad..34e76a23 100644
--- a/P01_Flate_Plate_1_Part/bin/key.hypara
+++ b/P01_Flate_Plate_1_Part/bin/key.hypara
@@ -16,7 +16,7 @@ string defaultParaFile = "./bin/cfd_para.hypara";
 //            3 -- Grid partition.
 //            4 -- Knowledge repository / examples of PHengLEI-API.
 int ndim      = 2;
-int nparafile = 1;
+int nparafile = 2;
 
 int    nsimutask    = 0;
 string parafilename = "./bin/cfd_para_subsonic.hypara";
@@ -51,3 +51,5 @@ int numberOfGridProcessor = 0;
 // ATP read
 //@string parafilename1 = ""
 //@string parafilename2 = "";
+
+string parafilename1 = "./bin/particle_para.hypara";
\ No newline at end of file
diff --git a/P01_Flate_Plate_1_Part/bin/particle_para.hypara b/P01_Flate_Plate_1_Part/bin/particle_para.hypara
new file mode 100644
index 00000000..b116fa12
--- /dev/null
+++ b/P01_Flate_Plate_1_Part/bin/particle_para.hypara
@@ -0,0 +1,16 @@
+#########################################################################
+#                       Particle                                  #
+#########################################################################
+int iParticleModel = 1;
+
+string particleInterpolation_struct = "TrilinearInterpolation";
+
+//! #########################################################################
+//! # File in and out                                                       #
+//! #########################################################################
+int ifInitParticle = 1;
+int ifReadRestartParticle = 0;
+int ifWirteRestartParticle = 1;
+
+string initParticleFile = "./grid/particle_init.h5";
+string restartParticleFile = "./grid/particle_restart.h5";
\ No newline at end of file
diff --git a/P01_Flate_Plate_1_Part/bin/particlepoint_para.hypara b/P01_Flate_Plate_1_Part/bin/particlepoint_para.hypara
index bb1f3ff6..a2c448be 100644
--- a/P01_Flate_Plate_1_Part/bin/particlepoint_para.hypara
+++ b/P01_Flate_Plate_1_Part/bin/particlepoint_para.hypara
@@ -81,11 +81,4 @@ int forceBassetType = 1;
 //! fileParticleOutputType: Control which variable need to output.
 //!                         0 -- No output.
 string fileParticleOutput = "./result/particleOutput.dat";
-int fileParticleOutputType = 0;
-
-//! #########################################################################
-//! # File in and out                                                       #
-//! #########################################################################
-string initParticleFile = "./grid/particle_init.h5";
-//string restartParticleFile = "./grid/particle_restart.h5";
-string restartParticleFile = "";
\ No newline at end of file
+int fileParticleOutputType = 0;
\ No newline at end of file
diff --git a/P01_Flate_Plate_1_Part/grid/particle_init.h5 b/P01_Flate_Plate_1_Part/grid/particle_init.h5
index 3aa65dca..08818cbd 100644
Binary files a/P01_Flate_Plate_1_Part/grid/particle_init.h5 and b/P01_Flate_Plate_1_Part/grid/particle_init.h5 differ