Category Archives: Theoretical Modeling

In large eddy simulation (LES), the large scales of turbulent motion are resolved directly, whereas the small scales that are computationally expensive to solve are modeled. The scale separation is performed either in the physical domain (space or time) or in Fourier space, which involves application of an explicit or implicit scale filtering operation, partingContinue reading “Turbulence modeling for large eddy simulation”

The high-fidelity LES of the fluidelastic instability yielded vital insights into the physics of interaction between the velocity flow and a cylinder in a tube bundle. In particular, the LES flow fields exhibited the modified flow regions due to cylinder oscillations, which were in and out of synchronization with surrounding flow for increasing flow velocity,Continue reading “Fluidelastic instability in heat-exchanger tube bundles: theoretical model”

Nitration of benzene produces nitrobenzene, an important compound that is used as a solvent and an intermediate in the manufacturing of organic compounds. Nitrobenzene is typically produced in industry by using liquid phase nitration of benzene, where the process uses nitric and sulfuric acids in a highly exothermic reaction. In the process, sulfuric acid needsContinue reading “Benzene nitration in vapor phase on a solid acid catalyst”