Motivated by a laboratory experiment reported in Alben, Shelley & Zhang (Nature, vol. 420, 2002, p. 479), we performed simulations of an elastic fibre anchored at its centre point and immersed in a flowing viscous incompressible fluid by the immersed boundary (IB) method. We focus on the influence of some dimensionless parameters on vortex shedding from the fibre for Re in the range [30, 800]. ...

This study concerns the scope to improve water flooding in heterogeneous reservoirs. We used an existing, in-house developed, optimization program consisting of a reservoir simulator in combination with an adjoint-based optimal control algorithm. In particular we aimed to examine the scope for optimization in a two-dimensional horizontal reservoir containing a single high permeable streak, ...

Note that the in the (corrected) expressions for the dimensionless parameters Γ0 and Γ one recognizes the Odijk deflection lengths λ0 = (P0kBT/f) 1/2 and λ = ((P0 + ΔP)kBT/ f). In terms of these deflection lengths the dimensionless parameters are simply Γ0 = 2πλ0/ξ and Γ = 2πλ/ξ. No explicit expression was given for the force-dependent apparent persistence length Papp( f). Upon substituting eq ...

The most general Lagrangian consistent with chiral, heavy quark, and strong interaction symmetries to order 1 M and to linear order in the SU(3) vector and axial currents is presented. Two new dimensionful and five dimensionless couplings arise at this order. The heavy to light flavor changing current is derived to the same order, giving rise to two additional dimensionful constants and six dim...

Abstract The optimal design of hydraulic fracturing parameters is the key to commercial exploitation unconventional reservoirs. Hydraulic test one main methods for optimizing parameters. It known that scale effect exists between laboratory experiments and field treatments fracturing. However, studies on how eliminate are rarely reported. In this work, we conduct sensitivity analysis rock mechan...

Experiments on oscillating flow at the abrupt transition between a two-dimensional channel and essentially infinite space are presented. It is shown that phenomena associated with the transition are functions of three independent dimensionless parameters including the dimensionless radius rounding the edge of the end of the channel. The effect of each of these three parameters on the time-avera...

Abstract: In this paper, a combined use of dimensional analysis (DA) and statistical design of experiments (DOE) is proposed for a hydrodynamics experiment where there are a large number of variables. While DA is well-known, DOE is still unfamiliar to most ocean engineers although it has been shown to be extremely useful in many engineering applications. To illustrate the method, a study concer...