An advanced Thermal-FSI approach to flow heating/cooling

Numerical Modeling of Cyclic Creep-Fatigue Damage Development for Lifetime Assessment of Steam Turbine Components

“…(6) depends on the surface type and flow character [11]. The heat transfer model adopted in this study is based on the well-proven formulae for heat transfer coefficients in steam turbine rotors and can be employed in online calculations of temperatures and thermal stresses [14], which is not possible when more advanced thermal FSI (fluid-structure interaction) modeling is adopted [15][16][17][18].…”

Analiza termodynamiczna i techniczna zeroemisyjnej elektrowni dla pomorza

“…In systems with enhanced heat transport, there are discontinuities in temperature, commonly known as temperature drops or jumps [27]. This extremely difficult problem in thermal-FSI (Fluid Solid Interaction) means that the temperature jumps can occur on the both side of a surface layer, hence the Smoluchowski thermal layer jump appears simultaneously in solid and fluid as was presented in Fig.…”

“…Taking these requirements into account, a discontinuities temperature profile in a solid-fluid contact layer (Fig. 3) is discussed in work [4] and implemented in paper [27]. Some theoretical issues have been developed and presented in this section.…”

“…Some theoretical issues have been developed and presented in this section. [27] It should also be noted that the effect of the temperature jump is not identified with the effect of thermal transpiration phenomenon. Reynolds thermal transpiration can be presented as the macroscopic movement occurring at a fluid-solid phase interface induced in a fluid by a wall temperature gradient along its surface.…”

“…3, thermal layer between hot fluid continua and cold solid continua can be described by a thin but finite contact interphase. The length of temperature jump was defined by von Smoluchowski to be [4,27]:…”