T he validity of the ‘‘theorem’’ of minimum entropy production (per unit time) was assessed in Refs 1 and 2 for the well documented case of single – phase fluid tube flow bifurcation from laminar to turbulent regimes. The analysis led to the following two main conclusions: 1) This theorem is not generally valid. 2) The stable type of flow regime is associated with a maximum specific (per unit m...

It is neither feasible nor desirable to consider in detail all of the small-scale fluctuations that occur in the atmosphere. For this reason, we introduce averaging or smoothing operators, and attempt to describe only the average state of the atmosphere, following the approach of “Reynolds Averaging.” This leads, however, to additional terms in the governing equations for the averaged quantitie...

Three statistical jet noise prediction models are compared for a representative set of single-stream cases, which include cold and hot jets the Strategic Investment in Low-Carbon Engine Technology experiment at an acoustic Mach number 0.875 as well NASA small rig numbers 0.5 0.9. The implemented those proposed by Tam Auriault (Jet Mixing Noise from Fine-Scale Turbulence,” AIAA Journal, Vol. 37,...

In the present work, performance/flow characteristics (namely, effect of operating parameters like pressure on flow patterns, drop, and extent uniformity) transport phenomena a manifold (header tube assembly) having an inlet outlet at center are carried out macroscale geometry using CFD simulations. this study, existing design available in published literature (with high non-uniformity) was con...

Conceptual analogy (CA) is an approach, that integrates conceptualization based on prior experiences, i.e. case memory organization, and analogical reasoning (Borner and Janetzko 1995, Borner and Wode 1995). It was prototypically implemented and tested to support the design process in building engineering (B orner 1994a). This paper reviews the development of CA. It provides the basic assump...

The scalar mediation of the object through the space of representation ensures design methodologies based on similitude or procedural techniques must initially work upon appropriated forms. Given that translation ensures that these forms remain as a trace the architectural object is implicitly reliant on the application of analogy. While still bound to the act of drawing in, on or through the d...