A blackbox optimization of volumetric heating rate for reducing the wetness of the steam flow through turbine blades

A coupled Computational Fluid Dynamics and Wells-Riley model to predict COVID-19 infection probability for passengers on long-distance trains

“…Thus, in the CFD analysis presented in this paper, it is assumed that the respired aerosol cloud of droplets can be modelled using a simple scalar gas concentration release ( Hathway et al, 2011 ). This approach to representing aerosols utilises the well-known Eulerian-Eulerian method ( Hoseinzade et al, 2021 ). Furthermore, the current modelling assumes that there is no loss of virus infected droplets (as a concentration reduction) due to deposition on surfaces or loss of virus infectivity due to decay.…”

“…Computational Fluid Dynamics (CFD) is a well-established modelling approach for simulating fluid flows within complex environments ( Patankar, 1980 ). Established applications of CFD include vehicle aerodynamics ( Gu et al, 2018 , Thabet and Thabit, 2018 ), fire simulation ( Galea, 1989 ), ventilation studies ( Wang et al, 2014 ), refrigeration ( Foroozesh et al, 2020 ) and turbine design ( Hoseinzade et al, 2021 , Yazdani and Lakzian, 2020 ). CFD has also been used to model the transmission of airborne infectious disease through the simulation of the transport of respiratory aerosols within ventilated spaces ( Peng et al, 2020 ).…”

“…CFD has also been used to model the transmission of airborne infectious disease through the simulation of the transport of respiratory aerosols within ventilated spaces ( Peng et al, 2020 ). There are broadly two methodologies to simulate the dispersion of aerosols in CFD: the Eulerian approach, where the aerosol cloud is approximated by a scalar gas tracer ( Foroozesh et al, 2020 , Hoseinzade et al, 2021 ); and the Lagrangian approach, where the aerosols are treated as a distribution of suspended particles with specific masses, volumes and physical properties ( Wang et al, 2014 , Yazdani and Lakzian, 2020 , Crowe et al, 1977 ). Heathway et al ( Hathway et al, 2011 ) demonstrated, through comparison with experimental data that both Eulerian and Lagrangian approaches are appropriate for modelling small bioaerosols.…”

Practical Mitigation Strategies for Countering the Spread of Aerosolized COVID-19 Virus (SARS-CoV-2) Using Ventilation and HEPA Air Purifiers: A Literature Review

“…The computational fluid mechanics approach in modelling droplet motion and distribution is well-documented in the fluid mechanics literature (Dolatabadi et al, 2021;Hoseinzade et al, 2021;Yazdani & Lakzian, 2020;Foroozeh et al, 2020;Hosseini & Lakzian, 2020). Several researchers have also used a CFD approach to examine the distribution of airborne COVID-19 virus droplets, under various environmental conditions, in school as well as in other environments.…”

A Novel Dehumidification Strategy to Reduce Liquid Fraction and Condensation Loss in Steam Turbines

“…Aliabadi et al [ 24 ] proposed a new method by injecting the hot steam into the blade cascades and evaluated the effect of the locations of the injections on the wet steam flows. Hoseinzade et al [ 25 ] studied the effect of volumetric heating rates on the steam flow and found the optimised values to reduce the wet steam condensations in steam turbines. Han et al [ 26 ] developed a numerical model to evaluate the effect of surface heating on the condensation behaviour in steam turbines and subsequently optimised the blade performance.…”