The 2-D edge plasma fluid transport code, UEDGE has been used to simulate the edge and scrape-off layer regions of circular limiter plasmas of ADITYA-U. The computational mesh defining the limiter geometry of ADITYA-U has been introduced in the UEDGE code through an in-house developed routine. It has successfully been integrated with the UEDGE code and the measured radial profile of electron density ( \(n_e\) ) in the edge region is modelled using the simulations. The plasma discharge for the present study has plasma current \(\text {I}_{P}\) \(\sim\) 130 kA, duration \(\sim\) 150 ms, chord-averaged electron density \(\sim\) 1.3 \(\times\) \(10^{19}\) \(\text {m}^{-3}\) , and central electron temperature \(\sim\) 270 eV has been observed. The maximum toroidal magnetic field is \(\sim\) 1.2 T. It has been found that an inward convective velocity, \(\text {v}_{conv}\) \(\sim\) 1.5 m/s is required in addition to the constant perpendicular diffusion coefficient, \(\text {D}_{\perp }\) \(\sim\) 0.2 \(\text {m}^2\) /s to adequately match the measured \(\text {n}_e\) profile in typical discharges of ADITYA-U. The value of \(\text {D}_{\perp }\) \(\sim\) 0.2 \(\text {m}^2\) /s is found to lie between the estimated neoclassical diffusivity and Bohm diffusivity.
