Curve Fitting, Quality of fits and Fitting errors

Introduction Air standard cycles are the reference cycles which give an idea on performance of internal combustion engines by combination of various process conditions like Isentropic, Isothermal, Adiabatic etc. Carnot cycle defines the maximum temperature that could be attained while operating between source and sink.…

INTRODUCTION: Engineering work would most often involve enormous data that would be generated. Data would not make sense if they are not processed and and are presented in format that could be comprehended such as graphs, charts and tables. But, most often this would involve managing large data bases and arranging them…

Introduction Knowledge in terms of data is Power. In engineering, plethora of data is generated. However, data doesnt make sense until it could be assessed and used for the predcition of the phenomena. Curve fitting is one of the most basic operation in this approach towards utilising and making sense out of the data.…

 INTRODUCTION Every system and process are generally mathematically represented by system of equations. These equations could be very simple ex: x+3 = 0 and finding root of x is straight forward. The value at which function as zero value or when function crosses x axis is called as the roots of the equation. As the…

INTRODUCTION In my earlier projects  https://skill-lync.com/projects/flowbench-simulation-for-valve-flow,  https://skill-lync.com/projects/wrist-pin-offset-piston-slap-and-internal-friction  we had looked on how the flow is affected by the valve lift and how piston moves in IC engine. However, to bring about…

INTRODUCTION Engines have been the single most important driver for the industrial revolution. James watt invented steam engine where energy of the fluid converted into kinetic energy of the locomotive. Progressively, this led to Otto cycle and Diesel cycle after various modifications to power cycles which led to discovery…

INTRODUCTION Geneva Mechanism or a Maltese cross or Geneva stop is the most commonly used mechanism to produce intermittent mechanism. Geneva mechanism is a unique form of Gear mechanism, but the motion is brought to stand still for certain fraction of period. This stoppage and start is periodic and there is no reverse…

INTRODUCTION Gears are one of the most important power transmission component. They transmit motion between two shafts or between a shaft and a slide (Rack and pinion). They transmit motion by direct contact. The surfaces of the two gears make tangential contact.  The law of gearing states the condition that has to…

INTRODUCTION All bodies which have mass and elasticity exhibit the phenomenon of vibration. Mass is the inherent property of the body and the elasticity causes relative movement between parts. When external forces displace the body, internal forces due to elasticity will try to bring body to its initial position. All the…

INTRODUCTION Stress is the internal resistance to change in the shape of the body when the external load is applied. When the stress in the body exceeds the failure stress for the material, the structure can fail either by yielding or cracking. In ductile materials, necking phenomenon is noticed, while in brittle materials,…

INTRODUCTION Structures such as Beams, columns, struts forms the basis of construction of buildings, lathe beds etc which are designed to take up load. https://skill-lync.com/projects/beams-a-section-geometry-study, shows the efffect how stress would be developed in the structure. However, when the columns which are…

INTRODUCTION Beam is the long strutural member with comparatively smaller cross sectional dimensions generally designed to take up lateral loads acting on the section. It finds application by supporting floors and ceilings of the buildings. However, lathe beds, shaft supported on bearings can also be treated as the beams.…

INTRODUCTION The study of Compressors, fans, blowers and turbines are in itself a subject in engineering and they are widely classified under TURBOMACHINERIES. A turbomachine is a device in which there is a continuous transfer of energy between rotor and fluid passing through rotor due to dynamic action which in turn results…

INTRODUCTION: Flow of charges or the fluid is sometimes continuous and in other times, requires intermittent operation. One classic example is in the Engines where intake and exhaust valves open for the particular range of crank angle degrees to allow charge in and out of the system. Similarly, butterfly valves which have…

INTRODUCTION:  Flow over external bodies could be broadly classified into flow over blunt bodies like a cylinder and flow over streamlined bodies. https://skill-lync.com/projects/tacoma-bridge-flow-over-cylinder, This link depicts the importance of flow over blunt bodies and concepts of wake, flow separation.…

INTRODUCTION Studying the external flow past a body has been the major significance, as they contribute to studying the aerodynamic behaviour of cars, aeroplane, bridges or any other objects which are submerged in fluids. The shape of the objects has significant impact as they present various behaviours, in some shapes,…

Introduction: Fluids are those materials which undergo continuous deformation under action of shear stress no matter how small the stress is. This definition of fluids is very important and deals with one major characteristic, deformation and in other words, flow. Liquids and gases, both fall under domain of fluids. …

Introduction - Phase 1: CFD which stands for Computational fluid dynamics, is a field which emerged in late 20th century with advent of computers and fast computing, processing capabilities. Intially Fluid studies were predominantly experimental based, then theories were constructed to explain the observations from experiments.…

Introduction: 1) Vapor cycle and Rankine Cycle Basics Rankine cycle is one of the most basic vapour power cycles. In general, power cycle converts heat to work continuously and in this process, working fluid is recycled throughout the process.  Thermal power plants, Nuclear power plants are few examples where…

Introduction Thermodynamics is basically a science dealing with interconversion of heat and work. However, during this process, numerous state parameters change, in turn affecting the order of system, direction of process, state properties, kinectics of reaction. Apart from Pressure, Volume and temperature, enthalpy, entropy…

Introduction: Pendulum is the most basic system used to describe vibration systems. Vibrations can be classified into Free and Forced vibrations. Mass, Spring constant and Damping form the three key elements to define the free vibration system. This could be conveniently represented by means of an ordinary differential…

Introduction: Mechanical robots are essentially open ended linkages where the input torque or force to one of the link will drive motion through a linkage. A bucket or a hand attached at the end of the linkage is used to achieve various tasks such as picking simple objects and placing them in some other coordinates defined…

Introduction Genetic algorithm is based on Evolutionary biology propagated by Charles Darwin. This is widely used to find optimal solutions to most complex problems which may take lifetime to solve. This algorithm is particularly inspired by the evolution process in nature. The logic is that neither the strongest or the…

Introduction Knowledge in terms of data is Power. In engineering, plethora of data is generated. However, data doesnt make sense until it could be assessed and used for the predcition of the phenomena. Curve fitting is one of the most basic operation in this approach towards utilising and making sense out of the data.…

Introduction Air standard cycles are the reference cycles which give an idea on performance of internal combustion engines by combination of various process conditions like Isentropic, Isothermal, Adiabatic etc. Carnot cycle defines the maximum temperature that could be attained while operating between source and sink.…

Introduction Drag force is one of the single most important force in field of aerodynamics. It is the resistance for the object to move through the fluid at a velocity. Higher speed, higher the drag and it increases quadratically with changes in velocity. It can be classified into pressure drag and friction drag. It is…