Computational analysis of droplet- and particle-laden, turbulent and separated high-speed flows

Gustaaf B. JacobsDepartment of Aerospace Engineering & Engineering MechanicsSan Diego State UniversityThe optimization of fuel droplet/particle and fuel-air mixing improves performance of scramjets and pulse detonation engines and reduces environmental pollution. Understanding the impact of debris in explosions can save lives. The flows in dust explosions and in high-speed combustors are characterized by the intricate interaction between droplets, particles, separated shear layers, turbulence and/or shocks. The tremendous complexity of this interaction has left many questions unanswered. I will discuss our efforts to computationally analyze the droplet- and particle-laden flows. I will first discuss high-fidelity Eulerian-Lagrangian computational methods that model the gas flow equations in the Eulerian frame with high-order methods, while particles are traced along there path in the Lagrangian frame. I will discuss high-order coupling between the two frames and illustrate the performance of the method. I will secondly discuss flow separation, compressibility effects and the droplet dispersion of flows with relevance to the high-speed separated flows in simplified combustor geometries.

Location: James H. Zumberge Hall Of Science (ZHS) - 252

Audiences: Everyone Is Invited

Contact: April Mundy