A numerical study for coating of ventilation ducts using jet injection

In this study, the performance of a novel method where an antibacterial solution is pressurized and sprayed into recirculated air through nozzles, investigated numerically. This resembles jet in crossflow problem mixes with ventilation further adheres to inner surfaces duct. The motion particles dispersed described as advection passive scalar, i. e., temperature, allowing for single-phase flow solution. effectiveness coating evaluated by temperature distribution on Single phase three-dimensional turbulent at two different temperatures modeled velocity fields duct were calculated using commercial code ANSYS Fluent. numerical model validated experiments conducted full-scale test rig, terms temperature. calculations four series; effect nozzle arrangement, injection angle, jet-to-crossflow ratio, time-dependent profile sinusoidal wave form are investigated. solutions show that highly inefficient ratios less than 3.3, period time-varying stream has little performance.