Publication

Improvement of homogeneous tubular reactors operated at low Reynolds number

Albert Renken
1985
Conference Papers

Abstract

Motionless mixers are used as internals to improve the behavior of tubular reactors (diam. 40 mm) for homogeneous liq. phase reactions at low Reynolds no. (Re = 0.005-100). Small gradients in temp. or d. normally lead to large stochastic backmixing of the fluid. Such flow perturbations can effectively be suppressed in addn. to a flattening of the flow profile if regularly assembled internals are used. The motionless mixers used are SMX and SMV, CH, the ratios of the effective fluid velocity to the axial dispersion coeff. are .apprx.80 and 70 m-1, resp. [on SciFinder (R)]

Official source

https://infoscience.epfl.ch/entities/publication/fda25f22-b13c-475d-91ca-9b36bc37c18d

About this result

This page is automatically generated and may contain information that is not correct, complete, up-to-date, or relevant to your search query. The same applies to every other page on this website. Please make sure to verify the information with EPFL's official sources.

Graph Chat

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.

Albert Renken
1985
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/fda25f22-b13c-475d-91ca-9b36bc37c18d

About this result

Related concepts (27)

Reynolds number

In fluid mechanics, the Reynolds number (Re) is a dimensionless quantity that helps predict fluid flow patterns in different situations by measuring the ratio between inertial and viscous forces. At low Reynolds numbers, flows tend to be dominated by laminar (sheet-like) flow, while at high Reynolds numbers, flows tend to be turbulent. The turbulence results from differences in the fluid's speed and direction, which may sometimes intersect or even move counter to the overall direction of the flow (eddy currents).

Fluid

In physics, a fluid is a liquid, gas, or other material that continuously deforms (flows) under an applied shear stress, or external force. They have zero shear modulus, or, in simpler terms, are substances which cannot resist any shear force applied to them. Although the term fluid generally includes both the liquid and gas phases, its definition varies among branches of science. Definitions of solid vary as well, and depending on field, some substances can be both fluid and solid.

Fluid dynamics

In physics, physical chemistry and engineering, fluid dynamics is a subdiscipline of fluid mechanics that describes the flow of fluids—liquids and gases. It has several subdisciplines, including aerodynamics (the study of air and other gases in motion) and hydrodynamics (the study of liquids in motion). Fluid dynamics has a wide range of applications, including calculating forces and moments on aircraft, determining the mass flow rate of petroleum through pipelines, predicting weather patterns, understanding nebulae in interstellar space and modelling fission weapon detonation.

Related publications (3)

Improvement of homogeneous tubular reactors operated at low Reynolds number

Chat with Graph Search

3-D simulations of snow transport, erosion and deposition using a Large Eddy Simulation coupled with a Lagrangian Stochastic Model

MATHICSE Technical Report : Semi-implicit BDF time discretization of the Navier-Stokes equations with VMS-LES modeling in a High Performance Computing framework

Wind-tunnel experiments of thermally-stratified turbulent boundary layer flow over a wall-mounted 2-D block