ADV History of engineering & technology Nagan Raya RSS deficit Rouse number Technology: general issues bed-mounted horizontal cylinder bridge pier bursting phenomena circular pipe consolidation current dilute-hyper concentration finite flowing water flat and eroded bed floating structure flow field gravel-bed hydrodynamic moment maintenance dredging physical model tests sand-bed sediment self-preservation in wall-wake stability statistical diagnosis suspended sediment concentration third-order correlations turbulence turbulence intensities deficit