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Effect of Nozzle Pressure Ratio and Control Jets Location to Control Base Pressure in Suddenly Expanded Flows
Research Output | Dar Al-hikmah Library | IIUM Only

In this paper, computational fluid dynamic (CFD) analysis and experiments have been carried out to study the effect of nozzle pressure ratio, i.e. the ratio of inlet pressure to atmospheric pressure, and the pitch circle diameter of the control jets to regulate the base pressure. The variables considered for the analysis as well as the experiments

Influence of Expansion Level on Base Pressure and Reattachment Length
Research Output | Dar Al-hikmah Library | IIUM Only

In high-speed projectiles like a rocket, the thrust is created by the convergent-divergent nozzle. The flow from the nozzle is exhausted in the enlarged duct of larger diameter to maximize the thrust. When the flow from the nozzle is exhausted in the enlarged duct, the base pressure gets reduced and hence increases base drag. This paper numerically

Experimental Validation of Indoor relay-Assisted Visible Light Communications for a last-Meter Access Network
Research Output | Dar Al-hikmah Library | IIUM Only

This paper provides experimental results for a relay-assisted visible light communications (VLC) link using a white light-emitting diode (LED) for a last-meter access network. We demonstrate that a relay-based VLC scheme improves the system performance, especially for link spans longer than 5 meters, in the presence of blocking and shadowing by red

Modified Version of the Theory of Planned Behaviour to Study the Purchase Intention Towards Gold Dinar
Research Output | Dar Al-hikmah Library | IIUM Only

This study explores the literature concerning the purchase intention of gold dinar in Malaysia. Although some research has been done on gold dinar acceptance in the past, a thorough marketing research perspective has been missing in this niche. Yet the gold dinar market is quite dynamic with many public and private initiatives yielding mixed respon

Investigation of Base Pressure Variations in Internal and External Suddenly Expanded Flows Using Cfd Analysis
Research Output | Dar Al-hikmah Library | IIUM Only

The Aerodynamic base drag because of negative pressure at the backward-facing step is a general obstacle connected with all the moving projectiles. The aerodynamic base drag is undesirable since its contribution to the cumulative drag is substantial. The study of pressure variations in the base region is of immense help for all moving projectiles.

Body Mass Index Status and its Relationship with Mode of Delivery, Birth Weight and Early Feeding History Among Children in an Urban Area of Pahang
Research Output | Dar Al-hikmah Library | IIUM Only

INTRODUCTION: The body mass index (BMI) of children is currently increasing in trends either globally or locally. In Malaysia, the number of children approaching unhealthy BMI is alarming. Despite the frequently conducted studies on children’s BMI and factors such as diet and physical inactivity, limited studies were done focusing on birth relate

The Role of Halal Certification on Purchase Intention Towards Food Products from Mena Countries: a Sem Study
Research Output | Dar Al-hikmah Library | IIUM Only

Kullu Halal (all Halal) is a concept that is highly applied in the Middle Eastern and North African (MENA) region as the majority of the population is Muslim. Many products from non-Muslim countries are also exported to the MENA countries and some of them are exposed to animal-based ingredients. Halal certification studies in the MENA region are fo

Effect of Chemical Surface Treatment on the Mechanical Properties of Reinforced Plasticized Poly(Lactic Acid) Biodegradable Composites
Research Output | Dar Al-hikmah Library | IIUM Only

Biodegradable composites were prepared by melt-blending technique using 30 wt% kenaf bast fiber (KBF) to reinforce 70 wt% plasticized poly(lactic acid) (PLA). The KBF was treated with various percentages of sodium hydroxide (NaOH), whereas 5% triacetin was used as plasticizer. The effects of the KBF surface treatments on the tensile, flexural, impa

An Enhanced Scheme to Support Qos in Mipv6 Based Networks Using Diffserv
Research Output | Dar Al-hikmah Library | IIUM Only

Quality of Service (QoS) is the ability of network elements (e.g. application, host and router) to provide some level of assurance for consistent network data delivery. Within a few past decades, QoS is certainly not supported over the IP-based networks. The Internet Protocol offers BestEffort services to its applications, i.e. there is no QoS comm

Analysis of Parameters Affecting Thrust and Base Pressure in Suddenly Expanded Flow from Nozzle
Research Output | Dar Al-hikmah Library | IIUM Only

In the case of flow from the nozzle, the net thrust is the vital and critical consideration. The net thrust force is the difference of the thrust developed by the jet from the nozzle and the base drag. The pressure in the base area of a duct with the sudden expansion usually is lower than the ambient atmospheric pressure, which is responsible for c

Category

KCDIOM

Type

KCDIOM

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