Skip to Main Content
 

Global Search Box

 
 
 
 

Files

File List


NilsenMatthewDavid2004 js.pdf (2.24 MB)

ETD Abstract Container

Abstract Header

Statistical Validation of a CFD Code as Applied to an Opposed Jet Mixing Vessel

Nilsen, Matthew David
http://rave.ohiolink.edu/etdc/view?acc_num=osu1419350824

Abstract Details

2004, Master of Science, Ohio State University, Chemical and Biomolecular Engineering.
The modeling of turbulent flows continues to present a formidable challenge both in industry and academia. There are many examples of commercially available computational fluid dynamics (CFD) codes that have been formulated specifically to handle the unique challenges involved in simulating transient, or time dependent, flows with the goal of predicting the behavior of systems without the need for experimental work. The savings in time and capital cost when designing a new piece of mixing equipment can be significant when using computational methods, making this approach highly attractive. However, it is important for the user of such software to be confident that the output accurately reflects how the system will behave in reality. Without confidence in the resulting data, it is difficult to justify any particular course of action based on information gained through the computation. For this reason, no model is complete without some degree of validation to ensure that the results reflect what will actually happen. However, the sort of data necessary to fully validate such a model is difficult to obtain because any flow field we wish to study is inherently three-dimensional and time dependent. It is reasonable to expect that the data used in validating the model should also be three-dimensional and have a time component. In this work, we present a statistical validation of a direct numerical simulation (DNS) model as applied to an opposed-jet mixing vessel. The data used for validation was obtained by three-dimensional particle tracking velocimetry (PTV) and is compared with a simulation of the same system under conditions identical to those under which the experiments were performed. The results indicate that, in some cases, there is good agreement between the main velocities measured in the experiments and those calculated by our DNS code. However, the amount of inconsistency in higher order statistics combined with unusual flow behavior in the experimental data leads to the conclusion that there are problems with the experimental data itself. Nonetheless, this work represents a new approach to validation, as this type and amount of data have never before been used for validation purposes.
Robert S. Brodkey (Advisor)
Jeffrey Chalmers (Committee Member)
126 p.
Chemical Engineering

Recommended Citations

Citations

  • Nilsen, M. D. (2004). Statistical Validation of a CFD Code as Applied to an Opposed Jet Mixing Vessel [Master's thesis, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1419350824

    APA Style (7th edition)

  • Nilsen, Matthew. Statistical Validation of a CFD Code as Applied to an Opposed Jet Mixing Vessel. 2004. Ohio State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1419350824.

    MLA Style (8th edition)

  • Nilsen, Matthew. "Statistical Validation of a CFD Code as Applied to an Opposed Jet Mixing Vessel." Master's thesis, Ohio State University, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=osu1419350824

    Chicago Manual of Style (17th edition)

osu1419350824
444
© 2004, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.