1. A method for generating a model of a cardiovascular system, the method comprising: a. a definition of a plurality of models of the time-varying behavior of a cardiovascular system with related parameters and a range of levels of detail, b. a definition of objectives of the cardiovascular models including at least one of, but not limited to, features of pressure waveforms, features of flow waveforms, features of time-varying velocity fields, features of transport, features of cardiac volume, features of tissue movements, and variations in these features with changes in physiological, disease, and interventional states, and c. a systematic tuning of the parameters defining the cardiovascular models such that at least one of these models approximately achieves the objectives.