The performance prediction of axial flow compressors at different speeds and under various pressure ratio conditions are still being developed because of costly empirical experiments. One-dimensional modeling is a simple, fast and accurate method for performance prediction in any type of compressor with different geometries. In this approach, inlet flow conditions and compressor geometry are kn...

This paper draws on the metaphor of a spectrum of models ranging from the most theorydriven to the most evidence-driven. The issue of concern is the practice and criteria that will be appropriate to validation of different models. In order to address this concern, two modelling approaches are investigated in some detailed — one from each end of our metaphorical spectrum. Windrum et al. (2007) (...

This paper addresses the problem of finding the appropriate method for conducting empirical validation in agent-based (AB) models, which is often regarded as the Achilles’ heel of the AB approach to economic modelling. The paper has two objectives. First, to identify key issues facing AB economists engaged in empirical validation. Second, to critically appraise the extent to which alternative a...