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Dispersion determination in a turbulent pipe flow using radiotracer data and CFD analysis
Sugihartoa,b, Stegowski Z.c, Furman L.c, Su’ud Z.a, Kurniadi R.a, Waris A.a, Abidin Z.b
a Department of Physics, Faculty of Mathematics and Natural Sciences, Bandung Institute of Technology, Indonesia
b Centre for Applications of Isotopes and Radiation Technology, National Nuclear Energy Agency, Indonesia
c AGH University of Science and Technology, Faculty of Physics and Applied Computer Science, Poland
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]This paper describes measurement of a transfer function using radiotracer technique and implementation of axial dispersion model to quantify the dispersion of water flowing in a pipe. In view of importance of the accurate description of the velocity profile and eddy diffusivity, in the present work the computational fluid dynamics (CFD) is utilized. Our interest however, lies not in radiotracer experiment, dispersion determination and CFD simulations as separate tasks, but in their relation. This work clearly shows what physical interpretation of experimental conditions mean in view of two definitions of tracer concentration and different possible initial/boundary conditions. Similarly to selection of the mathematical model adequate to experimental conditions, the main difficulty in numerical tracer test is in finding an approach that may be accepted as adequate to the real tracer test. In fact, the CFD simulations should resemble the real tracer investigation. From two different approaches examined, the unsteady option of CFD solver and species transport model was selected as appropriate. The considerations on experiment/simulation relation apply not only to radiotracer but other tracer techniques as well. © 2013 Elsevier Ltd.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Axial dispersion model,Experimental conditions,Physical interpretation,Radiotracer,Radiotracer techniques,Species transport models,Tracer concentration,Turbulent diffusivities[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Axial dispersion model,CFD,Convolution,Radiotracer,Turbulent diffusivity[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text]The authors acknowledge the support of the Polish Ministry of Science and Higher Education. This work was financially supported by Indonesian Ministry of Research and Technology under Ph.D Scholarship Program and IMHERE B.2C Bandung Institute of Technology Sandwich Doctoral Program, 2011.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.1016/j.compfluid.2013.03.009[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]