Guidelines for CFD papers

by Yi Zhang

An interesting editorial from Journal of Fluids Engineering by Malcolm J. Andrews, essentially about is worth of showing to people in numerical modeling of flows, contains some guidelines for submitting numerical results to JFE, such as:

Providing complex figures may be nice for a presentation to an audience or sponsor, but are often not scientific or quantitative unless great care is taken in their presentation/discussion or they illustrate a novel aspect of the work, and rarely provide much detailed insight into the problem under consideration. The usual x-y plots are often more illuminating, but also require the author to spend more time thinking about what is important and why which helps make the article more archival.

Simply reporting one parameter when, in fact, there are multiple parameters that self-interact suggests that the author does not understand the diagnostic, or its proper use, and also the basic elements of the flow itself e.g., simply reporting pressure, and not associated velocity fields, might indicate a lack of basic understanding. The article should include a detailed description of the results, their consequences, and their importance i.e., simply stating values or shapes does not warrant archival.

Nondimensional parameters serve not only to collapse data but they demonstrate an understanding of the basic parameters that control the processes of interest and form the basis of generality that can underlie resulting archival value formulas. Not expressing results in nondimensional form substantially weakens the archival value, suggests that the author does not understand the fundamental flow physics, and also suggests that the results have no generality or archival value.

It is crucial to provide the applicable parameter ranges for the commercial software or diagnostic and ensure that they are met in the current application e.g., this might mean answering the question about an appropriate use of a turbulence model, the Reynolds number range of the experiment, or the Stokes relaxation time of particle in the flow relative to the time scale of interest in the flow.