Early cracking of cementitious materials based on the eccentric ring test

An improved method based on the ring test called eccentric ring test is used to study the cracking of cementitious materials. The water-cement ratios were 0.25, 0.30, 0.35, 0.4 and the aggregate mass fractions were 10%, 30%, 50%, respectively. It was found that with the increase of water-cement ratio and aggregate, the cracking time of the...

Architectural Thermal Forms

The paper presents a developed method and algorithm to create environmental sustainable optimised forms based on the solar energy received in relation to receiving, containing and distributing energy. Different studies are created based upon this approach, to which forms are evaluated against conventional building geometries. The work shows a...

A Morphogenetic Approach for Performative Building Envelope Systems Using Leaf Venetian Patterns

Recent developments in theory and technology in performance based design show an interest towards generative systems. In this paper a morphogenetic approach will be introduced that looks at Goethean morphology and leaf venation patterns. To instrumentalize this approach an algorithm will be introduced to generate various leaf venation patterns...

Achieving Informed Decision-Making using Building Performance Simulation

Building performance simulation (BPS) is the basis for informed decision-making of Net Zero Energy Buildings (NZEBs) design. This paper aims to investigate the use of building performance simulation tools as a method of informing the design decision of NZEBs. The aim of this study is to evaluate the effect of a simulationbased decision aid, ZEBO...

Modelling of self-healing surface structures coatings

For many current engineering applications the performance of materials depends strongly on the surface properties of the top layer. In many cases a hydrophobic/superphydrophobic top surface is desired (for example for easy-toclean/ self-cleaning applications). The durability of coatings will be substantially extended if the layer which provides...

Simulation of aneurysm in different sections of aorta artery

By using CFD method, Fluent code , Aneurysm of specific locations of aorta artery have been simulated .For ascending, descending and abdominal aorta, aneurysm of different sizes and diameters are modeled. Geometrical data of aorta's sections have been extracted from physiological texts. Locations of hypothetical aneurysms are placed in the...

Simulation of the internal ballistics of a liquid propellant engine start system in comparison with experimental verification

There are several methods for starting a complex mechanical system, for example a liquid propellant engine. One of common methods is the use of solid propellant gas generator that is named solid propellant starter. In this method, a solid propellant motor is used for gas generating and leading it towards power generation turbine. The turbine as...

High temperature silicon carbide chemical vapor deposition processes: From pure thermodynamic to mass transport modeling

Over the last twenty years, processes which lead to materials synthesis from a gaseous phase constitute an important technology in many applications fields such as microelectronics or protective coating industry. Due to the complexity of the involved phenomena, computational modeling had been required to improve technological processes and help...