EIT reconstruction of a two-dimensional flow field using regularized Newton-Raphson method

The regularized Newton-Raphson method(RNRM) has been used reconstruct by electrical impedance tomography(EIT) a two-dimensional flow field containing some artificial objects. Three different cases of object size, number and position were investigated. Instead of using measured voltage data at boundary electrodes, computed data were used. It is found that the reconstruction method employed is working fine for the three cases. Though some blurring is found along the contour of the objects, the overall shape of the objects can be well reconstructed. The position of the objects was also accurately predicted. Also investigated is the effect of the regularization parameter. Our study shows the use of smaller regularization parameter results in better reconstruction