Contributed by Dr. Haibo Dong Manager, Wright State University For the first time in history, researchers have been able to create a detailed 3D numerical simulation of a dragonfly in free flight. On the left is a high-speed movie of a dragonfly taking off. The black spots on the wing are 0.5mm ink markers that help track exact wing positions when creating the 3D shapes using films shot from different […]
Contributed by Shen Heping, Software Development Manager, Hong Yuan Tech. Cars that ride more quietly. Higher-quality acoustics in auditoriums. Aircraft that meet or noise pollution regulations. These are just a few examples of how scientists and engineers can develop more comfortable, enjoyable, or environmentally-sound products by studying the source and distribution of noise. The ability to actually see the noise distribution or what’s going on around the noise source helps […]
Using advanced software tools to study the physics of airflow and how it impacts the performance of aircraft engines. […]
Contributed by Sylvain Gravel Hydro-Québec The Challenge: Accurately Visualizing Magnetic Flux Density In working with electrical power production and distribution, a key problem faced is being able to see the unseen – in other words, how does one view invisible electrical and magnetic forces at play? Hydro-Québec needed to be able to see magnetic flux density near a distribution power line, which is essentially understanding the power flow in the […]
Contributed by Dr. Baki Farouk Drexel University Problem Statement: Numerical simulations of the standing wave and acoustic streaming in a resonator filled with nitrogen (Fig. 1) are presented. The initial gas pressure in the resonator is 1 atm (101 KPa), and temperature is 300 K. The vibrational frequency of the left wall is chosen as f = 20 kHz. The corresponding wavelength of the sound wave at this frequency is […]
The Challenge: Understanding Complex Subsurface Fluid Interactions Before optimization of recovery methods for sub-surface oil and gas reservoirs can be obtained, a thorough understanding of the reservoir is required. These reservoirs have many complex structural, geological, and fluid characteristics that are impossible to fully understand using actual measurements and physical testing. Static and dynamic computer-based models and an arsenal of high-tech, computational tools are required to simulate reservoir performance and […]
Using numerical simulation models to predict the flow of sedimentation and erosion on water quality at lake and reservoir bottoms. […]
Contributed by Michael J. Aftosmis NASA Advanced Supercomputing Division, NASA Ames Research Center The Engineers Michael Aftosmis (NASA) and Scott Murman (ELORET) work at the NASA Advanced Supercomputing (NAS) Division at NASA Ames Research Center. NAS was founded in 1984 to develop, demonstrate, and deliver innovative, distributed heterogeneous computing capabilities to enable NASA projects and missions. Columbia Accident Investigation Board Results The plot is a composite image extracted from a […]
Contributed by: Dr. Craig Hunter, NASA Langley Research Center Noise Sources in a Jet Plume The jet plume in Figure 1 originates from a bypass ratio (BPR) typical of a transport aircraft. Noise sources are shown in a 12,500 Hz frequency band (sub-scale) with the observer at 88 degrees to the inlet. The data set has about 35 variables at 17 million cells. The bypass ratio relates the size of […]
MENU