Thank you for your reply. My object mass 0.155 grams. The object is an ellipse with two plates attached as wings. I am getting the drag force close to 1.5 N, which is equal to weight. Won't this suggest that the Buoyancy force is being neglected? I had this problem setup using help from the lifeboat launch video. The only difference is that I had my object immersed completely unlike the lifeboat problem that has VOF defined. Is it okay to have a reference pressure location with 101325 pa just above the object as shown in above picture? Can you please look at my problem setup above and comment if something looks wrong? Thank you for your help