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Full-Text Articles in Engineering
Design And Preliminary Testing Of Demand-Responsive Transverse Rumble Strips, Md Shakhawat Hossen, Christopher Kappes, Mohamed Trabia, Brendan Morris, Jeewoong Park, Alexander Paz
Design And Preliminary Testing Of Demand-Responsive Transverse Rumble Strips, Md Shakhawat Hossen, Christopher Kappes, Mohamed Trabia, Brendan Morris, Jeewoong Park, Alexander Paz
Mechanical Engineering Faculty Research
Transverse rumble strips are common practice to alert drivers by engaging their auditory and tactile senses in addition to visual senses by traffic signals. However, continuous exposure to noise and vibration by transverse rumble strips often results in diminished effectiveness and erratic behaviors, leading to additional safety challenges. In response, demand-responsive transverse rumble strips were developed as traffic safety countermeasures that reduce unnecessary noise and vibration associated with transverse rumble strips by incorporating active control of the rumble strips. Rather than staying static, demand-responsive transverse rumble strips are activated based on the presence of pedestrians, at predesignated times, or in …
An H-Adaptive Finite-Element Technique For Constructing 3d Wind Fields, Darrell Pepper, Xiuling Wang
An H-Adaptive Finite-Element Technique For Constructing 3d Wind Fields, Darrell Pepper, Xiuling Wang
Mechanical Engineering Faculty Research
An h-adaptive, mass-consistent finite-element model (FEM) has been developed for constructing 3D wind fields over irregular terrain utilizing sparse meteorological tower data. The element size in the computational domain is dynamically controlled by an a posteriori error estimator based on the L2 norm. In the h-adaptive FEM algorithm, large element sizes are typically associated with smooth flow regions and small errors; small element sizes are attributed to fast-changing flow regions and large errors. The adaptive procedure employed in this model uses mesh refinement–unrefinement to satisfy error criteria. Results are presented for wind fields using sparse data obtained from two regions …
Alternative Ways To Teaching Hvac And Related Subjects Through Actual Project Involvement-Three Case Studies, Samir F. Moujaes
Alternative Ways To Teaching Hvac And Related Subjects Through Actual Project Involvement-Three Case Studies, Samir F. Moujaes
Mechanical Engineering Faculty Research
No abstract provided.
Ascent And Decompression Of Viscous Vesicular Magma In A Volcanic Conduit, Helene Massol, Claude Jaupart, Darrell Pepper
Ascent And Decompression Of Viscous Vesicular Magma In A Volcanic Conduit, Helene Massol, Claude Jaupart, Darrell Pepper
Mechanical Engineering Faculty Research
During eruption, lava domes and flows may become unstable and generate dangerous explosions. Fossil lava-filled eruption conduits and ancient lava flows are often characterized by complex internal variations of gas content. These observations indicate a need for accurate predictions of the distribution of gas content and bubble pressure in an eruption conduit. Bubbly magma behaves as a compressible viscous liquid involving three different pressures: those of the gas and magma phases, and that of the exterior. To solve for these three different pressures, one must account for expansion in all directions and hence for both horizontal and vertical velocity components. …