Hi Rahul Joshi ;
I have checked RAS properties in Constant folder and made necessary corrections. When i am trying to run the simulation i am getting the error as follows

/*---------------------------------------------------------------------------*\\
| =========                 |                                                 |
| \\\\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\\\    /   O peration     | Version:  3.0.1                                 |
|   \\\\  /    A nd           | Web:      www.OpenFOAM.org                      |
|    \\\\/     M anipulation  |                                                 |
\\*---------------------------------------------------------------------------*/
Build  : 3.0.1-d8a290b55d28
Exec   : interFoam
Date   : Mar 31 2016
Time   : 23:36:59
Host   : "kvk-DL-H61MXEL"
PID    : 3115
Case   : /home/kvk/Desktop/Hydraulicjump
nProcs : 1
sigFpe : Enabling floating point exception trapping (FOAM_SIGFPE).
fileModificationChecking : Monitoring run-time modified files using timeStampMaster
allowSystemOperations : Allowing user-supplied system call operations

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
Create time

Create mesh for time = 0


PIMPLE: Operating solver in PISO mode

Reading field p_rgh

Reading field U

Reading/calculating face flux field phi

Reading transportProperties

Selecting incompressible transport model Newtonian
Selecting incompressible transport model Newtonian
Selecting turbulence model type RAS
Selecting RAS turbulence model SpalartAllmaras
Selecting patchDistMethod meshWave
SpalartAllmarasCoeffs
{
    sigmaNut        0.66666;
    kappa           0.41;
    Cb1             0.1355;
    Cb2             0.622;
    Cw2             0.3;
    Cw3             2;
    Cv1             7.1;
    Cs              0.3;
}


Reading g

Reading hRef
Calculating field g.h

Creating MRF zone list from MRFProperties
No finite volume options present



--> FOAM FATAL ERROR:
Continuity error cannot be removed by adjusting the outflow.
Please check the velocity boundary conditions and/or run potentialFoam to initialise the outflow.
Total flux              : 1e-300
Specified mass inflow   : 1.25
Specified mass outflow  : 0
Adjustable mass outflow : 0


    From function adjustPhi(surfaceScalarField&, const volVectorField&,volScalarField&)
    in file cfdTools/general/adjustPhi/adjustPhi.C at line 114.

FOAM exiting


Please help me in this regard.

can you please tell me step by step procedure about how to put my case directory inside Inter foam solver ?

I have done what you have said but i am getting the same error

/*--------------------------------*- C++ -*----------------------------------*\\
| =========                 |                                                 |
| \\\\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\\\    /   O peration     | Version:  3.0.1                                 |
|   \\\\  /    A nd           | Web:      www.OpenFOAM.org                      |
|    \\\\/     M anipulation  |                                                 |
\\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      binary;
    class       volVectorField;
    location    "0";
    object      U;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

dimensions      [0 1 -1 0 0 0 0];

internalField   uniform (0 0 0);

boundaryField
{
    new_wall
    {
        type            fixedValue;
        value           uniform (0 0 0);
    }
    wall
    {
        type            fixedValue;
        value           uniform (0 0 0);
    }
    outlet
    {
        type            inletOutlet;
        inletValue      uniform (2.5 0 0);
        value           uniform (0 0 0);
    }
    inlet
    {
        type            variableHeightFlowRateInletVelocity;
        flowRate        50;
        alpha           alpha.phase1;
        value           uniform (2.5 0 0);
    }
}


// ************************************************************************* //






/*--------------------------------*- C++ -*----------------------------------*\\
| =========                 |                                                 |
| \\\\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\\\    /   O peration     | Version:  2.3.1                                 |
|   \\\\  /    A nd           | Web:      www.OpenFOAM.org                      |
|    \\\\/     M anipulation  |                                                 |
\\*---------------------------------------------------------------------------*/
/*  Windows port by Atizar Ltd                                               *\\
\\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      binary;
    class       volScalarField;
    location    "0";
   object    p_rgh;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

dimensions    [1 -1 -2 0 0 0 0];

internalField    uniform 0.0;

boundaryField
{
    inlet
    {
        type    fixedFluxPressure;
    }
    new_wall
    {
        type    fixedFluxPressure;
    }
    outlet
    {
        type    fixedFluxPressure;
    }
    wall
    {
        type    fixedFluxPressure;
    }
}
// ************************************************************************* //

Yes, I did

You have posted the p_rgh file which is the dynamic pressure.The type of boundary condition used here is  fixedFluxPressure, but you have not specified the value for for this flux pressure .

/*********************************

type            fixedFluxPressure;
value           uniform 0;

/*********************************

 Also why are you using two different versions of OpenFOAM. In the header it shows 3.0.1 for the U file and 2.3.1 for p_rgh file.