Study of Energy Loss Characteristics of a Shaft Tubular Pump Device Based on the Entropy Production Method

The unstable flow of a shaft tubular pump device (STPD) leads to energy loss, thereby reducing its efficiency. aim this study is investigate the distribution pattern loss in STPDs. This paper reveals that two components with highest proportion are impeller and outlet passage. Furthermore, turbulent entropy production primary cause loss. Due wall effect, mainly occurs near hub shroud. Additionally, presence tip leakage vortex shroud further contributes region results exceeding 40% volume fraction 14% In passage, front region, 30%, part accounts for more than 65%. Finally, locations STPD under different flow-rate conditions, when visualized, it found high regions.