The additive manufacturing (AM) group at CAVS supplements its experimental capabilities with high-performance computer models. Computer modeling reduces the cost of trial-and-error experiments. The CAVS team is performing temperature distribution calculations during Laser Engineering Net Shaping (LENSTM) deposition of Ti-6Al-4V alloy based components, aiming to find optimal deposition path, laser power, speed, and powder delivery rate, and to produce the best quality products. The deposition process with un-optimized parameters can result in material defects, such as high porosity, insufficient strength, and high residual stress in the produced part. These defects can be minimized by adjusting parameters of the deposition process. CAVS' approach is to implement numerical models of laser deposition, validate them with data from physical experiments, and utilize simulations to find process parameters that will result in optimal manufactured product.