Interferometric tomography for reconstructing three-dimensional transient flow

In order to understand three-dimensional transient flow, it is very essential to apply holographic interferomertic tomography. The technique is also advantageous in providing nonintrusive measurement capability with reasonable accuracy and spatial resolution. Here, a new computational tomographic algorithm which is termed as Curvilinear Nonlocal Basis Function Method (CNBFM) is introduced for reconstruction of flow fields. It is appropriate for reconstruction under various ill-posed conditions involving a limited view angle and an opaque object inside a field with irregular boundaries. The reconstruction technique is tested through computer simulation of experiments as well as a real three-dimensional flow field. The results presented here demonstrate reliable measurement accuracy when the technique is applied for reconstruction of transient three-dimensional flow.