Variable-fidelity surrogate modeling offers an efficient way to generate aerodynamic data for aero-loads prediction based on a set of CFD methods with varying degree of fidelity and computational expense. In this paper, new algorithms, such as a Gradient-Enhanced Kriging method (direct GEK) and a generalized hybrid bridge function, have been developed to improve the efficiency and accuracy of t...

Underwater vehicles are equipped with a device for discharging projectiles, called the underwater discharge system. Because these have limited space, many studies attempted to reduce volume of system while improving its performance. However, owing characteristics system, occupied and performance conflict each other. Therefore, minimizing satisfying required criteria is most significant requirem...

Fuel microchannels for regenerative cooling are receiving increasing attention in advanced aviation technologies. Those allow heat integration between the endothermic cracking of jet fuels and their subsequent combustion. In this work, a detailed elementary-step kinetic model is developed to gain insights into chemistry Jet A surrogate (n-dodecane, isooctane, n-propyl benzene, 1,3,5-trimethylbe...

Nonlinear response history analysis (NLRHA) is generally considered to be a reliable and robust method assess the seismic performance of buildings under strong ground motions. While NLRHA fairly straightforward evaluate individual structures for select set motions at specific building site, it becomes less practical performing large numbers analyses either (1) multiple models alternative design...

Delta smelt is an endangered fish species in the San Francisco estuary that have shown overall population decline over past 30 years. Researchers developed a stochastic, agent-based simulator to virtualize system with goal of understanding relative contribution natural and anthropogenic factors might play role their decline. However, input configuration space high dimensional, running time-cons...

When analyzing data from computationally expensive simulation codes, surrogate modeling methods are firmly established as facilitators for design space exploration, sensitivity analysis, visualization and optimization. Kriging is a popular surrogate modeling technique used for the Design and Analysis of Computer Experiments (DACE). Hence, the past decade Kriging has been the subject of extensiv...