Continued exploration of the Moon and Mars will call for mobile robots that are increasingly capable in regolith; not only traversing it without getting stuck, but also manipulating and shaping it to suit mission needs. This work distinguishes issues governing performance of regolith operations, based on tasks motivated by preparatory site work for lunar outposts. Payload ratio (pound-forpound ...

although there exist advanced models which predict beach profile for natural beaches, the behavior of the beaches in front of seawalls still suffers from the lack of appropriate theoretical models and sufficient measured data. in this paper, following the results obtained from the measurements, a beach profile evolution model is developed, using the measured probability distribution of the near...

Su Woong Jung, Won-Hee Cho, Jung-Woo Seo, Jin Sug Kim, Chan-Duck Byung Ha Chung, Jae Berm Park, Yeong Hoon Sang-Ho Lee. Korean J Transplant 2022;36:254. https://doi.org/10.4285/ATW2022.F-3946

The numerical modeling of sediment transport under wave impact is challenging because the complex nature triple wave–structure–sediment interaction. This study presents three-dimensional scouring due to non-breaking on a vertical seawall. Navier–Stokes–Exner equations are approximated calculate full evolution flow fields and morphodynamic responses. bed erosion model based van Rijn formulation ...

It is more common to introduce the parapet/recurve/wave return wall over existing structure, such as a vertical seawall or composite reduce overtopping efficiently. The advantage of recurve on top sea has been studied in past regards wave interaction and overtopping. However, their efficiency protecting inland structure during extreme events flooding tsunami unexplored. present study addresses ...

In this study, laboratory tests were used to determine the deposition characteristics (runout distance, lateral width, and area) of debris flow their relationships with (flow velocity depth) according presence a berm. An experimental flume 1.3 1.9 m long, 0.15 wide, 0.3 high was employed investigate effects channel slope volumetric concentration sediment without The runout distance (0.201–1.423...