In this paper, a hexagonal magnet shape is proposed to have an arc profile capable of reducing torque ripples resulting from cogging in single-sided axial flux permanent (AFPM) machine. The arc-shaped increases the air-gap length effectively and makes more sinusoidal, which decreases density hence causes reduction torque. Cogging basic source vibration, along with noise PM machines, since it ma...

Monte Carlo analysis has become nearly ubiquitous since its introduction, now over 65 years ago. It is an important tool in many assessments of the reliability and robustness of systems, structures or solutions. As the deterministic core simulation can be lengthy, the computational costs of Monte Carlo can be a limiting factor. To reduce that computational expense as much as possible, sampling ...

This paper deals with the thermal reliability optimization of a pin fin heat sink (HS) filled phase change material (PCM) in order to study transfer performance for cooling electronic devices. Aluminium is taken carry out constant volume fraction 9% by choosing 72 fins. Paraffin wax used as PCM inside retain produced device. A reliability-based design (RBDO) addressed determine optimum configur...

This paper presents a multi-year scenario-based methodology for transmission expansion planning (TEP) in order to enhance the available transfer capability (ATC). The ATC is an important factor for all players of electricity market who participate in power transaction activities and can support the competition and nondiscriminatory access to transmission lines among all market participants. The...

Fault-tree and Event-tree analysis is widely utilized in safety engineering and is almost exclusively relied upon in Probabilistic Safety Assessment (PSA) for nuclear power plants (NPPs). In this approach, Binary Decision Diagram (BDD), which can obtain exact solutions in theory, was introduced as an alternative for a traditional approximation method, namely Minimal Cut Set (MCS) method. Howeve...

Three sampling methods are compared for efficiency on a number of test problems of various complexity for which analytic quadratures are available. The methods compared are Monte Carlo with pseudo-random numbers, Latin Hypercube Sampling, and Quasi Monte Carlo with sampling based on Sobol’ sequences. Generally results show superior performance of the Quasi Monte Carlo approach based on Sobol’ s...

AHRI Standard 540 (AHRI, 2015) is the current standard defining the methods for representing compressor performance data. The standard is widely used across the industry and uses a 10-coefficient third order polynomial equation to represent compressor published ratings. The accuracy of the data representation can be affected by multiple factors including measurement uncertainty, regression unce...

Performing a comprehensive sensitivity/uncertainty analysis is a valuable step in understanding and using a predictive hydrologic/water quality (H/WQ) model. This article applies one-factor-at-a-time (OAT) sensitivity analysis (SA) and first-order error analysis (FOEA)/Monte Carlo simulation with Latin hypercube sampling (LHS) uncertainty analysis techniques for evaluation of a complex, process...