Lucas Monteiro Nogueira 
1. Introduction In the jargon of hydrodynamic transport phenomena, a ‘shock’ is a discontinuity separating two different regions in an otherwise continuous medium (Kallenrode, 2004). It is associated with a disturbance moving faster than the rate of signal propagation in the environment, such as an airplane traveling at a speed greater than the speed of […]
1. Yield Surfaces Plasticity theory is the study of structural strains beyond the linear region in which deformations are elastic and Hooke’s law describes mechanical behavior. The existence of a fixed region of admissible generalized stresses is a key concept in this field. When modelling elastic-plastic behavior, it is assumed that at all times, the […]
In this economics/mathematics blog post, we discuss two basic solution concepts of cooperative game theory: the core and the Shapley value. A calculation example is included.
In this transportation/railway engineering blog post we discuss ballast fouling, a rail performance issue that each year costs millions of dollars for repair and maintenance in tracks all over the world.
In this hydraulics/hydrology/hydrogeology blog post, we discuss two simple models used to assess aquifer drawdown due to groundwater flow in confined and semiconfined wells.
In this chemical engineering/energy engineering blog post, we discuss biomass gasification, an energy conversion technique that can be used to produce hydrogen gas and other valuable chemicals.
In this energy studies/aerodynamics/aerospace blog post, we discuss vertical-axis wind turbines (VAWTs), an underrated renewable energy solution that has recently drawn the interest of the research community.
In this optics blog post, we explore Huygens-Fresnel diffraction and related concepts, such as Fresnel zones, Fresnel integrals, and the Cornu spiral.
In this blog post, we discuss two simple heat transfer-based models for determination of the freezing time of foods. Two solved example problems are included.
In this aerospace engineering blog post, we discuss elliptic circulation distributions and induced velocity (downwash). Two solved examples are included.
