Junction Flow Around Cylinder Group on Flat Platee

Junction flow inside and around three-row cylindrical group on rigid flat surface

“…These vortex structures interact with each other and with the streamlined surface, oscillate in space and time, combine and collapse under the action of the junction flow( Dargahi 1989 ; Simpson 2001 ; Yang et al., 2021 ). As shown by the results of studies on eroded soil ( Sumer et al., 2005 ; Yang et al., 2020 ; Voskoboinick et al., 2016 , 2021 ), the large-scale vortex in front of the cylinder of the group structure (index 3 in Figure 10 a) forms a local scour of the soil. Global scour of the soil around the group of cylinders is formed by the large-scale horseshoe vortex structure, which is indicated by index 5 in Figure 10 a and shown in Figure 5 b.…”

“…The operation of anemometers or thermistor sensors is based on the principle of heat dissipation. In our experiments, a sensitive element – thermistor used in electronics in temperature measurements was used ( Voskoboinick et al., 2013 , 2021 ). The thermistor is a semiconductor crystal with a diameter of 0.8 · 10 −3 m with two conductive legs with a diameter of about 1 · 10 −3 m, which were fixed in a cylindrical holder ( Figure 4 ).…”

“…A large number of works have been carried out for tandem cylindrical structures ( Mahbub Alam and Zhou, 2008 ; Palau-Salvador et al., 2008 ; Ataie-Ashtiani and Aslani-Kordkandi, 2013 ; Kim et al., 2017 ), three-cylinder structures ( Noack et al., 2016 ; Zheng et al., 2016 ; Behara et al., 2017 ; Chen et al., 2018 , 2020a , 2020b ), four cylinders ( Lam et al., 2003 ; Lam and Zou, 2010 ; Tong et al., 2014 ; Yang et al., 2021 ), six or more cylinders ( Takemura and Tanaka, 2007 ; Galan et al., 2019 ). A number of studies have been carried out with large groups of bluff bodies ( Zong and Nepf, 2012 ; Chang et al., 2017 , 2018 , 2020 ; Voskoboinick et al., 2021 ). The cylinders in groups were located in tandem, side-by-side, staggered configurations, or randomly ( Ricardo et al., 2016 ; Shan et al., 2020 ; Ahmadianfar et al., 2021 ).…”