Notes for Authors

Aims and Scope China PARTICUOLOGY, a bimonthly in English, purports to present the best papers in research, engineering and application in the overall field of PARTICUOLOGY, including particle characterization, particle preparation, aerosol, fluidization and ultra-fine particles. The journal includes the following sections： articles, R ＆ D notes, current events, editorials, reviews, forum for comments, opinions and qualified speculations, news on books, instruments and meetings.     

Notes for Authors

Aims and Scope China PARTICUOLOGY, a bimonthly in English, purports to present the best papers in research, engineering and application in the overall field of PARTICUOLOGY, including particle characterization, particle preparation, aerosol, fluidization and ultra-fine particles. The journal includes the following sections： articles, R ＆ D notes, current events, editorials, reviews, forum for comments, opinions and quafified speculations, news on books, instruments and meetings.     

Guide for authors

正Each of the sections below provides essential information for authors.We recommend that you take the time to read them before submitting a contribution to Acta Mechanica Sinica.We hope our guide to authors may help you navigate to the appropriate section.How to prepare a submission This document provides an outline of the editorial process involved in publishing a scientific paper in Acta Mechanica Sinica.     

Notes for Authors

Aims and Scope China PARTICUOLOGY, a bimonthly in English, purports to present .the best papers in research, engineering and application in the overall field of PARTICUOLOGY, including particle characterization, particle preparation, aerosol, fluidization and ultra-fine particles. The journal includes the following sections： articles, R ＆ D notes, current events, editorials, reviews, forum for comments, opinions and qualified speculations, news on books, instruments and meetings.     

Guide for Authors

All conlribufions should conform to the Aims and Scope shown at the front of the journal. In addition to full length papers of up to 5000 words, the Editors welcome reviews, correspondence and shorter commtmicafions of less than 2500 words dealing with novel research techniques, analysis of current research, new concepts, etc.[第一段]     

Notes for Authors

China PARTICUOLOGY, a bimonthly in English, purports to present the best papers in research, engineering and application in the overall field of PARTICUOLOGY, including particle characterization, particle preparation, aerosol, fluidization and ultra-fine particles. The journal includes the following sections： articles, R ＆ D notes, current events, editorials, reviews, forum for comments, opinions and qualified speculations, news on books, instruments and meetings.     

Guide for Authors

General All contributions should conform to the Aims and Scope shown at the front of the journal.     

Is load control suitable for fracture-energy measurements for concrete?

Sixteen notched concrete beams with , 0.5, 0.7 were tested in three-point bending—eight in strain control and eight in load control. The time to peak load was kept approximately the same for both cases for a given notch depth. The load-displacement traces were very similar and equivalent energy values agreed well in most cases. However the fracture-energy values based on the RILEM proposed specification were affected by the type of response control used. Paper was presented at the 1986 SEM Spring Conference on Experimental Mechanics held in New Orleans, LA on June 8–13.     

Algebraic-Complex Scheme for Dirichlet–Neumann Data for Parabolic System

In this paper, we use the Laplace–Laplace transformation and complex analysis to give a systematical scheme to determine the proper boundary conditions for initial-boundary value problems in the half space and to construct exponentially sharp pointwise structures of the boundary data. Here, we have used the boundary value problems with the Robin boundary conditions for the convection heat equations and the linearized compressible Navier–Stokes equation with a constant convection velocity to demonstrate this scheme.     

The Difference Methods for the Solution of Singular-Perturbation for the Elliptic-Parabolic Differential Equation

In this paper it is discussed the difference method for the solution of singular perturbation pro-blems for the elliptic equations,involving small parameter in the higher derivatives.Asε=0 theoriginal equations are degenerated into the parabolic equations.Authors constructed special difference schemes by means of the boundary layer properties ofthe solutions of these problems as well as investigated the convergence of this scheme and asymptoticbehaviour of the solutions.Finally,a numerical example is given.     

Adaptive robust control for dual avoidance–arrival performance for uncertain mechanical systems

An unprecedented dual avoidance–arrival problem is addressed for uncertain mechanical systems. The concerned system uncertainty is (possibly fast) time-varying but within an unknown bound. The objective is to design a control to simultaneously guarantee two seemingly opposite system performance: avoidance (with respect to a region) and arrival (with respect to another region). This is formulated as an approximate constraint-following control problem, in which formulation, the desired constraint is creatively divided into two categories as the avoidance constraint and the arrival constraint. An adaptive robust control is then put forward under the consideration of the system uncertainty. It is proved that, with the proposed control input, the avoidance constraint is completely followed and the arrival constraint is closely followed; hence, the dual avoidance–arrival problem is carried out.     

Simulation Methods for Functional Materials

Functional materials embrace a broad area, ranging from functional information materials to special polymers, from special chemicals for printing to matenais used in making paints. Inasmuch as most tunctional materials are particulate, the present contribution is considered pertinent to the present FORUM.     

Convergence Results for Forchheimer’s Equations for Fluid Flow in Porous Media

The Forchheimer equations for non-slow flow in a saturated porous medium are studied. We prove the convergence results for both the first and the second Forchheimer coefficients.     

HLLC scheme for the preconditioned pseudo-compressibility Navier–Stokes equations for incompressible viscous flows

A new HLLC (Harten-Lax-van leer contact) approximate Riemann solver with the preconditioning technique based on the pseudo-compressibility formulation for numerical simulation of the incompressible viscous flows has been proposed, which follows the HLLC Riemann solver (Harten, Lax and van Leer solver with contact resolution modified by Toro) for the compressible flow system. In the authors' previous work, the preconditioned Roe's Riemann solver is applied to the finite difference discretisation of the inviscid flux for incompressible flows. Although the Roe's Riemann solver is found to be an accurate and robust scheme in various numerical computations, the HLLC Riemann solver is more suitable for the pseudo-compressible Navier--Stokes equations, in which the inviscid flux vector is a non-homogeneous function of degree one of the flow field vector, and however the Roe's solver is restricted to the homogeneous systems. Numerical investigations have been performed in order to demonstrate the efficiency and accuracy of the present procedure in both two- and three-dimensional cases. The present results are found to be in good agreement with the exact solutions, existing numerical results and experimental data.