diff --git a/tutorials/sphereGranFlow/binarySystemOfParticles/runThisCase b/tutorials/sphereGranFlow/binarySystemOfParticles/runThisCase
old mode 100644
new mode 100755
diff --git a/utilities/particlesPhasicFlow/CMakeLists.txt b/utilities/particlesPhasicFlow/CMakeLists.txt
index 1ee6f3f8..6bea0938 100644
--- a/utilities/particlesPhasicFlow/CMakeLists.txt
+++ b/utilities/particlesPhasicFlow/CMakeLists.txt
@@ -4,6 +4,7 @@ particlesPhasicFlow.cpp
 positionParticles/positionParticles.cpp 
 positionOrdered/positionOrdered.cpp 
 positionRandom/positionRandom.cpp
+positionFile/positionFile.cpp
 empty/empty.cpp
 )
 #set(link_lib phasicFlow Kokkos::kokkos Interaction Utilities)
diff --git a/utilities/particlesPhasicFlow/positionFile/positionFile.cpp b/utilities/particlesPhasicFlow/positionFile/positionFile.cpp
new file mode 100755
index 00000000..ebcbf7dd
--- /dev/null
+++ b/utilities/particlesPhasicFlow/positionFile/positionFile.cpp
@@ -0,0 +1,116 @@
+/*------------------------------- phasicFlow ---------------------------------
+      O        C enter of
+     O O       E ngineering and
+    O   O      M ultiscale modeling of
+   OOOOOOO     F luid flow       
+------------------------------------------------------------------------------
+  Copyright (C): www.cemf.ir
+  email: hamid.r.norouzi AT gmail.com
+------------------------------------------------------------------------------  
+Licence:
+  This file is part of phasicFlow code. It is a free software for simulating 
+  granular and multiphase flows. You can redistribute it and/or modify it under
+  the terms of GNU General Public License v3 or any other later versions. 
+ 
+  phasicFlow is distributed to help others in their research in the field of 
+  granular and multiphase flows, but WITHOUT ANY WARRANTY; without even the
+  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+
+-----------------------------------------------------------------------------*/
+
+#include "error.hpp"
+#include "dictionary.hpp"
+#include "positionFile.hpp"
+
+
+#include "streams.hpp"
+// #include "token.hpp"
+#include "fileSystem.hpp"
+#include "iFstream.hpp"
+#include "oFstream.hpp"
+
+bool pFlow::positionFile::positionPointsFile()
+{
+	REPORT(0) << "Reading user defined position file....";
+
+	position_.clear();
+
+	// Read position data from file.
+	iFstream is(fileName_);
+
+	realx3 tempPoint;
+
+	token tok;
+
+	while (!is.eof() || !is.bad())
+	{	
+		// read position x
+		is >> tempPoint.x_;
+
+		if(commaSeparated_)
+		{
+			is >> tok;
+			if(tok.type() != token::COMMA)
+			{
+				fatalErrorInFunction << "Error datafile format, the data not comma separated!";
+				return false;
+			}
+		}
+
+		// read position y
+		is >> tempPoint.y_;
+
+		if(commaSeparated_)
+		{
+			is >> tok;
+			if(tok.type() != token::COMMA)
+			{
+				fatalErrorInFunction << "Error datafile format, the data not comma separated!";
+				return false;
+			}
+		}
+		
+		// read position z
+		is >> tempPoint.z_;
+
+		// insert position data to vector
+		position_.push_back(tempPoint);
+	}
+
+	REPORT(0) << "Done!" << END_REPORT;
+
+	return true;
+}
+
+pFlow::positionFile::positionFile
+(
+	systemControl& control,
+	const dictionary& dict
+)
+:
+	positionParticles(control, dict),
+	poDict_
+	(  
+		dict.subDict("fileInfo")
+	),
+	fileName_
+	(
+		poDict_.getVal<word>("name")
+	),
+	commaSeparated_
+	(
+		poDict_.getValOrSet("commaSeparated", Logical("Yes"))
+	),
+	position_
+	(
+		"position", 
+		max(maxNumberOfParticles(), position_.size()), 
+		0,
+		RESERVE()
+	)
+{
+	if(!positionPointsFile())
+	{
+		fatalExit;
+	}
+}
\ No newline at end of file
diff --git a/utilities/particlesPhasicFlow/positionFile/positionFile.hpp b/utilities/particlesPhasicFlow/positionFile/positionFile.hpp
new file mode 100755
index 00000000..e2df0841
--- /dev/null
+++ b/utilities/particlesPhasicFlow/positionFile/positionFile.hpp
@@ -0,0 +1,105 @@
+/*------------------------------- phasicFlow ---------------------------------
+      O        C enter of
+     O O       E ngineering and
+    O   O      M ultiscale modeling of
+   OOOOOOO     F luid flow       
+------------------------------------------------------------------------------
+  Copyright (C): www.cemf.ir
+  email: hamid.r.norouzi AT gmail.com
+------------------------------------------------------------------------------  
+Licence:
+  This file is part of phasicFlow code. It is a free software for simulating 
+  granular and multiphase flows. You can redistribute it and/or modify it under
+  the terms of GNU General Public License v3 or any other later versions. 
+ 
+  phasicFlow is distributed to help others in their research in the field of 
+  granular and multiphase flows, but WITHOUT ANY WARRANTY; without even the
+  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+
+-----------------------------------------------------------------------------*/
+
+#ifndef __positionFile_hpp__
+#define __positionFile_hpp__
+
+#include "positionParticles.hpp"
+
+namespace pFlow
+{
+
+
+class positionFile 
+:
+	public positionParticles
+{
+private:
+
+	dictionary 	poDict_;
+
+	// word 		fileName_;
+
+	fileSystem fileName_;
+	
+	realx3Vector 	position_;
+
+	Logical commaSeparated_;
+
+	bool positionPointsFile();
+
+public:
+
+	// - type Info
+	TypeInfo("file");
+
+	positionFile(
+		systemControl& control,
+		const dictionary& dict);
+
+	// - add this class to vCtor selection table 
+	add_vCtor(
+		positionParticles,
+		positionFile,
+		dictionary);
+
+	~positionFile() final = default;
+
+	//// - Methods 
+
+	uint32 numPoints()const final
+	{
+		return static_cast<uint32>(position_.size());
+	}
+
+	uint32 size()const final
+	{
+		return static_cast<uint32>(position_.size());
+	}
+
+	real maxDiameter() const final
+	{
+		return 0;
+	}
+
+	// bool commaSeparated()const
+	// {
+	// 	return commaSeparated_();
+	// } 
+	
+	// - const access to position
+	const realx3Vector& position()const final 
+	{
+		return position_;
+	}
+
+	// - access to position 
+	realx3Vector& position() final
+	{
+		return position_;
+	}
+};	
+
+
+}
+
+
+
+#endif // __positionFile_hpp__