Altering slip force

src/lagrangian/intermediate/submodels/Kinematic/CollisionModel/PairCollision/PairCollision.C

@@ -193,8 +193,7 @@ void Foam::PairCollision<CloudType>::collide()
     // Loop over all referred cells
     forAll(ril, refCellI)
     {
-        ReferredCell<typename CloudType::parcelType>& refCell =
-            ril[refCellI];
+        ReferredCell<typename CloudType::parcelType>& refCell = ril[refCellI];
 
         const labelList& realCells = refCell.realCellsForInteraction();
 

src/lagrangian/intermediate/submodels/Kinematic/CollisionModel/PairCollision/PairFunction/SpringSliderDashpot/SpringSliderDashpot.C

@@ -224,10 +224,7 @@ void Foam::SpringSliderDashpot<CloudType>::evaluatePair
         {
             // Tangential force greater than sliding friction, particle slips
 
-            fT_AB =
-               -mu_*mag(fN_AB)
-               *tangentialOverlap_AB/mag(tangentialOverlap_AB)
-              - etaT*USlip_AB;
+            fT_AB = -mu_*mag(fN_AB)*USlip_AB/mag(USlip_AB);
 
             tangentialOverlap_AB = vector::zero;
             tangentialOverlap_BA = vector::zero;