diff --git a/src/main/c/includes/fluid/dispatch/dispatcher.h b/src/main/c/includes/fluid/dispatch/dispatcher.h
index a0fbd76f..852781bb 100644
--- a/src/main/c/includes/fluid/dispatch/dispatcher.h
+++ b/src/main/c/includes/fluid/dispatch/dispatcher.h
@@ -10,6 +10,8 @@
 
 #define FLUID_DISPATCHER_OVERRIDE_CELLULAR 1
 
+#define FLUID_DISPATCHER_OVERRIDE_GRID2 1
+
 
 /**
  * Dispatches chunks to different simulation queues based on the chunk's properties
diff --git a/src/main/c/includes/fluid/env/environment.h b/src/main/c/includes/fluid/env/environment.h
index a3ec58f1..4228cb6c 100644
--- a/src/main/c/includes/fluid/env/environment.h
+++ b/src/main/c/includes/fluid/env/environment.h
@@ -59,6 +59,7 @@ typedef struct {
     Chunk ** cellularQueue;
     Chunk ** gridQueue;
     Chunk ** grid2Queue;
+    Chunk ** pressurecellQueue;
 } FluidSimQueue;
 
 /**
diff --git a/src/main/c/includes/fluid/sim/pressurecell/velocity.h b/src/main/c/includes/fluid/sim/pressurecell/velocity.h
index b7038817..0a90691c 100644
--- a/src/main/c/includes/fluid/sim/pressurecell/velocity.h
+++ b/src/main/c/includes/fluid/sim/pressurecell/velocity.h
@@ -7,6 +7,12 @@
 #include "fluid/queue/chunkmask.h"
 
 
+
+/**
+ * Adds velocity from the delta buffer to this chunk
+*/
+LIBRARY_API void pressurecell_add_gravity(Environment * environment, Chunk * chunk);
+
 /**
  * Adds velocity from the delta buffer to this chunk
 */
diff --git a/src/main/c/src/fluid/dispatch/dispatcher.c b/src/main/c/src/fluid/dispatch/dispatcher.c
index a539f2c9..d746d8bf 100644
--- a/src/main/c/src/fluid/dispatch/dispatcher.c
+++ b/src/main/c/src/fluid/dispatch/dispatcher.c
@@ -44,7 +44,8 @@ LIBRARY_API void fluid_dispatch(int numReadIn, Chunk ** chunkViewC, Environment
     for(int i = 0; i < numReadIn; i++){
         Chunk * currentChunk = chunkViewC[i];
         //TODO: conditionally add to queues based on some values (ie lod, spatial loc, etc)
-        arrput(environment->queue.grid2Queue,currentChunk);
+        arrput(environment->queue.pressurecellQueue,currentChunk);
     }
+    
 }
 
diff --git a/src/main/c/src/fluid/sim/pressurecell/pressurecell.c b/src/main/c/src/fluid/sim/pressurecell/pressurecell.c
index 705346c3..c70d9e11 100644
--- a/src/main/c/src/fluid/sim/pressurecell/pressurecell.c
+++ b/src/main/c/src/fluid/sim/pressurecell/pressurecell.c
@@ -39,6 +39,11 @@ LIBRARY_API void fluid_pressurecell_simulate(
     // Velocity phase
     //
 
+    for(int i = 0; i < numChunks; i++){
+        Chunk * currentChunk = chunks[i];
+        pressurecell_add_gravity(environment,currentChunk);
+    }
+
     for(int i = 0; i < numChunks; i++){
         Chunk * currentChunk = chunks[i];
         pressurecell_add_velocity(environment,currentChunk);
diff --git a/src/main/c/src/fluid/sim/pressurecell/velocity.c b/src/main/c/src/fluid/sim/pressurecell/velocity.c
index 689f216a..03146801 100644
--- a/src/main/c/src/fluid/sim/pressurecell/velocity.c
+++ b/src/main/c/src/fluid/sim/pressurecell/velocity.c
@@ -3,6 +3,24 @@
 #include "fluid/sim/pressurecell/solver_consts.h"
 
 
+/**
+ * Adds velocity from the delta buffer to this chunk
+*/
+LIBRARY_API void pressurecell_add_gravity(Environment * environment, Chunk * chunk){
+    int x, y, z;
+    float * dArr = chunk->d[CENTER_LOC];
+    float * vArr = chunk->v[CENTER_LOC];
+    float * vSourceArr = chunk->v0[CENTER_LOC];
+    for(z = 1; z < DIM-1; z++){
+        for(y = 1; y < DIM-1; y++){
+            for(x = 1; x < DIM-1; x++){
+                vSourceArr[IX(x,y,z)] = vSourceArr[IX(x,y,z)] + dArr[IX(x,y,z)] * environment->consts.gravity * environment->consts.dt;
+            }
+        }
+    }
+}
+
+
 /**
  * Adds velocity from the delta buffer to this chunk
 */
@@ -126,7 +144,11 @@ LIBRARY_API void pressurecell_advect_velocity(Environment * environment, Chunk *
                     x1 < 0 || y1 < 0 || z1 < 0 ||
                     x1 > DIM-1 || y1 > DIM-1 || z1 > DIM-1
                 ){
-                    printf("advect dens: %d %d %d   %d %d %d ---  %f %f %f\n", x0, y0, z0, x1, y1, z1, x, y, z);
+                    printf("advect vel: out of bounds \n");
+                    printf("%d %d %d\n", x0, y0, z0);
+                    printf("%d %d %d\n ", x1, y1, z1);
+                    printf("%f %f %f\n", x, y, z);
+                    printf("\n");
                     fflush(stdout);
                 }
 
diff --git a/src/main/c/src/fluid/sim/simulator.c b/src/main/c/src/fluid/sim/simulator.c
index e74cd187..f3f665bb 100644
--- a/src/main/c/src/fluid/sim/simulator.c
+++ b/src/main/c/src/fluid/sim/simulator.c
@@ -6,6 +6,7 @@
 #include "fluid/sim/simulator.h"
 #include "fluid/sim/grid/simulation.h"
 #include "fluid/sim/grid2/grid2.h"
+#include "fluid/sim/pressurecell/pressurecell.h"
 #include "fluid/sim/cellular/cellular.h"
 #include "fluid/queue/chunk.h"
 #include "fluid/env/environment.h"
@@ -42,5 +43,13 @@ LIBRARY_API void fluid_simulate(Environment * environment){
             fluid_grid2_simulate(currentCount,queue.grid2Queue,environment,environment->consts.dt);
         }
     }
+
+    //pressurecell sim
+    {
+        currentCount = stbds_arrlen(queue.pressurecellQueue);
+        if(currentCount > 0){
+            fluid_pressurecell_simulate(currentCount,queue.pressurecellQueue,environment,environment->consts.dt);
+        }
+    }
 }