Dzakiyya Yumna Fitrasani

Introduction

Hello, my name is Dzakiyya. I am a student in Metode Numerik-01. This will be my page regarding Metode Numerik.

FULLNAME: Dzakiyya Yumna Fitrasani

STUDENT NUMBER: 2106728055

Numerical Methods in Mechanical Engineering / 22 May 2023

Numerical methods are extensively used in various areas of mechanical engineering to solve complex mathematical equations, simulate physical phenomena, and optimize designs. Here are some key applications of numerical methods in mechanical engineering:

1. Solving Equations: Numerical methods such as root-finding algorithms (e.g., Newton-Raphson method) and numerical integration techniques (e.g., Simpson's rule, trapezoidal rule) are used to solve equations encountered in mechanical engineering, such as finding the roots of nonlinear equations or evaluating integrals in engineering analysis.

2. Finite Element Analysis (FEA): FEA is widely used in mechanical engineering for structural analysis. It involves dividing a complex structure into smaller finite elements and solving the equations of equilibrium numerically. FEA helps in determining stress, strain, deformation, and failure criteria in mechanical components and systems. It is used in the design and optimization of structures, such as buildings, bridges, and machine components.

3. Computational Fluid Dynamics (CFD): CFD is employed to analyze fluid flow and heat transfer in mechanical systems. Numerical methods, such as finite volume or finite element methods, are used to discretize the fluid domain and solve the governing equations (e.g., Navier-Stokes equations). CFD is applied in the design of aerodynamic profiles, HVAC systems, combustion chambers, and optimization of fluid flow in pipes and channels.

4. Optimization and Design: Numerical optimization techniques, such as genetic algorithms, gradient-based methods, and response surface methods, are employed to optimize designs in mechanical engineering. These methods help in finding optimal solutions for parameters like shape, size, material selection, and operating conditions, considering constraints and objective functions.

These are just a few examples of how numerical methods are applied in mechanical engineering. These methods enable engineers to solve complex problems, make informed design decisions, optimize performance, and reduce the need for costly physical experiments.

Hydrogen Storage Optimization

Hydrogen Storage Technologies

Storing hydrogen in gaseous form requires two main components – a storage compartment and a compressor to achieve higher storage pressure and increase the storage density. Gaseous hydrogen is usually not stored in pressure exceeding 100 bar in vessels above ground and 200 bar for underground storage (Wolf, 2015). The low density of hydrogen leads to the requirement of large storage volumes, and as a consequence, usually large investment costs. However, higher pressure e.g. 700 bar requires advanced vessel materials such as carbon fiber, which makes it very expensive and not considered viable for large-scale applications (Andersson & Grönkvist, 2019). One of the main advantages of storing hydrogen as compressed gas compared to liquid hydrogen is that most applications for hydrogen today require hydrogen in gaseous form.