Dynamic Analysis of Soil Tillage Using Computational Fluid Dynamics

Subrata Karmakar; R. Lal Kushwaha

doi:10.4271/2005-01-3571

2005-11-01

Dynamic Analysis of Soil Tillage Using Computational Fluid Dynamics 2005-01-3571

Soil cutting for preparing a proper seedbed with the purpose of crop production is tillage. Though tillage is a dynamic process, most of the previous studies are based on quasi-static analysis following the passive earth pressure theories. The focus of this research was to describe the mechanical behavior of soil under the action of a tillage tool from the dynamic perspective using fluid flow analysis. This paper describes the application of a commercially available, three-dimensional computational fluid dynamics (CFD) model to simulate and analyze dynamic tool interaction with soil during tillage.

Soil has been considered as a Bingham material taking into account its non-Newtonian viscoplastic behavior. Simulations used a rectangular flow geometry based on the tool influence zone obtained from previous research. Soil flow behavior has been studied as a conduit with the interaction of a bluff body in the flow domain. With a more realistic approach, free-surface simulations were carried out to observe the soil deformation pattern due to tool interaction during tillage. Soil pressure on the tool surface was also investigated.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Digital $37.00 Print $37.00

Preview Document

We also recommend:

Standards

SAE Mobilus®

Publications

News

Events

Professional Development

A World in Motion (PreK-12)

Participate with SAE

SAE Membership

Donate

Dynamic Analysis of Soil Tillage Using Computational Fluid Dynamics 2005-01-3571

SAE MOBILUS