Joint physical and numerical modeling of water distribution networks.

Zimmerman, Adam ; O'Hern, Timothy John ; Orear, Leslie Jr. ; Kajder, Karen C. ; Webb, Stephen Walter ; Cappelle, Malynda A. ; Khalsa, Siri Sahib ; Wright, Jerome L. ; Sun, Amy Cha-Tien ; Chwirka, J. Benjamin ; Hartenberger, Joel David ; McKenna, Sean Andrew ; van Blo

关键词: WATER SUPPLY;    SOLUTES;    MIXING;    FLOW MODELS;    NETWORK ANALYSIS;    TURBULENCE;    PIPES;    TANKS;    COMPUTERIZED SIMULATION Water-Distribution.;    Computer codes;    Pipe-Hydrodynamics.;    Pipe lines.;   

DOI  :  10.2172/961658
RP-ID  :  SAND2009-0323
PID  :  OSTI ID: 961658
Others  :  TRN: US200920%%197

学科分类：工程和技术（综合）

美国|英语

来源: SciTech Connect

【 摘 要 】

This report summarizes the experimental and modeling effort undertaken to understand solute mixing in a water distribution network conducted during the last year of a 3-year project. The experimental effort involves measurement of extent of mixing within different configurations of pipe networks, measurement of dynamic mixing in a single mixing tank, and measurement of dynamic solute mixing in a combined network-tank configuration. High resolution analysis of turbulence mixing is carried out via high speed photography as well as 3D finite-volume based Large Eddy Simulation turbulence models. Macroscopic mixing rules based on flow momentum balance are also explored, and in some cases, implemented in EPANET. A new version EPANET code was developed to yield better mixing predictions. The impact of a storage tank on pipe mixing in a combined pipe-tank network during diurnal fill-and-drain cycles is assessed. Preliminary comparison between dynamic pilot data and EPANET-BAM is also reported.