This article forms pan of an ongoing study of the coal and coalbed methane resource potential of northwestern British Columbia. Other areas under study include the Bower basin coalfield, Telkwa coalfield and Tertiary coalfields of the Bulkley Valley. Tertiary sediments survive in many major watersheds in British Columbia. The sediments are generally not well consolidated, poorly exposed and the...

Debris-flow modeling is a great challenge due to its complex physical mechanism that remains poorly understood. The present research incorporates the effect of rheological features non-Newtonian fluid into complete quasi-single-phase mixture model, which explicitly accommodates interactions between flow, non-uniform sediment transport, and bed evolution. estimated by Hersch–Bulkley–Papanastasio...

Consideration of sludge rheology is very important for a proper solids transport and to obtain the necessary settler capacity. Although a true yield stress does not exist, large apparent viscosities at low shear rates inhibit an efficient sludge transport. Research indicates that the dimensionless ratio of gravity to viscous forces is an important operational parameter towards settler capacity....

We present numerical simulations based on a Boltzmann kinetic model with competing interactions, aimed at characterizing the rheological properties of soft-glassy materials. The lattice kinetic model is shown to reproduce typical signatures of driven soft-glassy flows in confined geometries, such as Herschel-Bulkley rheology, shear banding and hysteresis. This lends further credit to the presen...

The paper is devoted to the study of steady-state transmission problem between two Herschel-Bulkley fluids in a three dimensional thin layer.

Accurate characterization of the rheological behavior non-Newtonian fluids is critical in a wide range industries as it governs process efficiency, safety, and end-product quality. When fluid may vary substantially over relatively short period time, desirable to measure its viscous properties on more continuous basis than relying spot measurements made with viscometer few samples. An attractive...

Loss of circulation while drilling is a challenging problem that may interrupt operations, reduce efficiency, and contaminate the subsurface. When drilled borehole intercepts conductive faults or fractures, lost manifests as partial total escape drilling, workover, cementing fluids, into surrounding rock formations. control materials (LCM) are often used in mitigation process. Understanding fra...

The calculation of the rheological parameters fresh cement pastes plays a key role in understanding rheology cement-based mixes. Because paste is not simple Bingham fluid, suitable nonlinear model must be found for characterizing its flow. A test system which rotational speed or shear rate can changed multiple steps regarded as protocol because reaches steady state. Furthermore, theoretical der...

When a viscous fluid spreads underneath deformable surface skin or crust, the peeling dynamics at front can control rate of advance rather than bulk self-similar flow. For an elastic skin, this results in quasi-static interior blister held constant pressure that is matched to narrow region behind front. In paper, analogous problem considered for deforms either viscously plastically, both. parti...