Experimental and numerical examination of an opposed jet RIM mix head at process conditions

The fluid jet impingement in the mix head for a reaction injection molding (RIM) is examined using flow visualization, laser Doppler anemometer measurements, and steady and unsteady finite volume simulations using boundary fitted non-orthogonal coordinates. Similar flow cases show a central flow impingement point and, away from the impingement point at the higher viscosity fluid is seen to form a surface that the lower viscosity fluid did not …