Turbulence energy spectra in baffled mixing vessels.

Magnetohydrodynamic Turbulence: Generalized Energy Spectra

A general framework that incorporates the Iroshnikov-Kraichnan (IK) and Goldreich-Sridhar (GS) phenomenalogies of magnetohydrodynamic (MHD) turbulence is developed. This affords a clarification of the regimes of validity of IK and GS phenomenalogies and hence help resolve some controversies in this problem. Magnetohydrodynamic (MHD) flows that occur naturally (like astrophysical situations) and...

Energy spectra in elasto-inertial turbulence

Large-scale energy spectra in surface quasi-geostrophic turbulence

is studied. The nonlinear transfer of this system conserves the two quadratic quantities Ψ1 = 〈[(−∆) ψ]〉/2 and Ψ2 = 〈[(−∆) ψ]〉/2 (kinetic energy), where 〈·〉 denotes a spatial average. The energy density Ψ2 is bounded and its spectrum Ψ2(k) is shallower than k in the inverse-transfer range. For bounded turbulence, Ψ2(k) in the low-wavenumber region can be bounded by Ck where C is a constant inde...

Mixing in manipulated turbulence

A new computational framework for the simulation of turbulent flow through complex objects and along irregular boundaries is presented. This is motivated by the application of metal foams in compact heat-transfer devices, or as catalyst substrates in process-engineering. The flow-consequences of such complicated objects are incorporated by adding explicit multiscale forcing to the Navier–Stokes...

a review on the jet mixing in vessels

mixing is an important unit operation in many chemical engineering applications. nowadays, the jet mixing is widely used and going to be replaced with conventional mixers as a result of its simplicity, high performance and low costs. jet mixing in tanks has been investigated by many researchers. however, no comprehensive literature review exists. in the present review detailed investigation of ...