1. Introduction Fluids are around us everywhere. For example, fluids, which we exposed to it every day, like the air we breathe and the water we drink. These behave in a familiar way, taking the shape of their container and flowing easily. These fluids called the non-Newtonian fluids-This name backs to the physicist newton-. On the other hand, there is some fluids do not have the same properties which called the non-Newtonian fluid. This report defines the non-Newtonian fluids, the types of them, give some examples and talk about some of the application on them. 2. Definition Non-Newtonian fluids are fluids that do not obey the Newton law of viscosity. In these fluids the viscosity varies when shear rate varies in a non-linear way. …show more content…
Rheological mathematical models There are several rheological mathematical models applied on rheograms in order to transform them into information on fluid rheological behavior. For non-Newtonian fluids, the three models presented below are mostly applied (Seyssiecq & Ferasse, 2003). i. Herschel Bulkley model The Herschel Bulkley model is applied on fluids with a nonlinear behavior and yield stress. It is considered as a precise model since its equation has three adjustable parameters, providing data (Pevere & Guibaud, 2006). The Herschel Bulkley model is expressed in equation 5, where 0 represents the yield stress. τ = 0 + * n (5) The consistency index parameter () gives an idea of the viscosity of the fluid. However, to be able to compare -values for different fluids they should have similar flow behavior index (n). When the flow behavior index is close to 1 the fluid´s behavior tends to pass from a shear thinning to a shear thickening fluid. When n is above 1, the fluid acts as a shear thickening fluid. According to Seyssiecq and Ferasse (2003) equation 5 gives fluid behavior information as follows: 0 > 0 & n = 1 Bingham plastic behaviour 0 = 0 & n < 1 Pseudoplastic
They just forgot to mention the other effects of fluids in nature. “The influence of the fluid on a body moving through it depends not only on the body’s velocity but also on the velocity of the fluid,” this is called relative velocity ( ). The relative velocity of a body in a fluid has an effect on the magnitude of the acting forces. For example, as a long distance runner is running into a head wind, the force of the fluid is very strong. If the runner is running with the help of a tail wind, the current’s force is reduced and may even be unnoticeable.
Milton Hershey is best known for being the creator of Hershey’s chocolate. However, he has accomplished more than concocting caramels and candies. Mr. Hershey was a philanthropist, someone who has an aspiration to aid people and end social problems. They do so by donating large amounts of their personal fortune to help people or things, somewhat like a charity, but the purpose is for it to last a long time rather than just for a while. Likewise, Milton Hershey was a caring man who sought to make life better for people, whether they be man, woman, or child.
Ever since the beginning of time, Americans have been struggling to obtain equality. The main goal is to have a country where everyone can be considered equal, and no one is judged or discriminated against because of things out of their control. Kurt Vonnegut, Jr. Plays with this idea of total equality in his futuristic short story, Harrison Bergeron. The setting is in 2081, where everyone is equal. No one is allowed to be better than anybody else. The government makes anyone who would be considered above average wear a transmitting device to limit their thoughts to twenty seconds at a time, which is considered average in this day. They also must wear bags of buckshot shackled to their necks to ensure no one can be stronger than anybody
The handicaps are to people as the cage is to the bird. This simile describes how Caged Bird and Harrison Bergeron are alike. Harrison Bergeron and Caged Bird are very alike in many reasons. They both reference limitations on freedom. In Caged Bird the limitation is that the bird is in the cage and cannot fly or go wherever it pleases. In Harrison Bergeron the limitations are all the handicaps. In Harrison Bergeron there are limitations to the citizens. These are called handicaps. When you are more capable at something then other people are then you receive handicaps that limit your abilities so that everyone is equal. Some handicaps are earpieces that stop you from thinking with a ringing sound, masks for those that have superior beauty, and
Hazel Bergeron in “Harrison Bergeron” is perhaps not the most obviously important character, when compared to the intellectual abilities of George Bergeron, she does not stand out. When comparing her to the great force that is Harrison, or the great beauty of the ballerina, again, she does not stand out. However, Hazel stands for much more than any of the other preceding characters, even Harrison himself. In the story of “Harrison Bergeron” Kurt Vonnegut establishes Hazel Bergeron as the light, sympathy, and, in some ways, foundation of the story; illustrating the kindness of humanity in the worst of times.
Serway, Jewett. Physics for Scientists and Engineers 6th Edition. Pomona: California State Polytechnic University. 2004.
In the short story Harrison Bergeron by Kurt Vonnegut, Jr, the government takes fourteen year old Harrison Bergeron away from his parent George and Hazel. This all occurs during the year of 2081, and amendments 211, 212, and 213 are in play during this time period. Hazel is only allowed to have average intelligence, and her husband George wears a helmet on his head, which limits his thinking. Hazel and George are watching the television as two ballerinas dance, but they are wearing radios, which restrict them and make them dance the same. Hazel said if she was a handicap general she would make chimes ring on Sunday to make it religious. Hazel tells George to take a nap because he look tired from wearing the handicap bag that weighs in at forty pounds. She suggests he takes some weight out but for every weight he takes out he goes to jail for that many years. Also everyone would go back to his or her competitive ways in the community, and he doesn’t want that.
In classical fluid dynamics, the Navier-Stokes equations for incompressible viscous fluids and its special (limiting) case the Euler equations for inviscid fluids are sets of non-linear partial differential equations that describes the spatiotemporal evolution of a fluid (gas). Both equations are derived from conservative principles and they model the behavior of some macroscopic variables namely: mass density, velocity and temperature.
This essay which will identify the five approaches with health promotion. It will focus on two approaches for the sake of this essay. These approaches will be defined and show how it could be used to tackle a life style behaviour using the Beattie’s model. The Beattie’s model is one of the several models health promoters use as a guide to direct the intervention mode and strategy which is suitable for any particular problem. This model will be used to identify the location of each of the two approaches, highlighting role of the health promoter in each approach, as well as discuss policies and ethical issues which are associated with each approach. Furthermore the essay will cover the values of each approach while it emphasis the need for health promoters to consider the effectiveness of a model to ensure suitability for any presented problem.
Surface Tension: The contractive tendency of a liquid that allows it to resist an external force. This is measured in Newton.
In industry, the performance specifications for a particular pump may be known, but the tests are usually based on water as the pumping medium. For liquids of significantly higher viscosity than water, these performance curves may only be accurate at certain flow rates, or they might not be valid at all, and it might be necessary to recalibrate the specifications for higher viscosity liquids.
Table 3. 1 lists expressions for the resistance Coefficient and values for the flow exponent for each of the formulas
On a more scientific note I am interested in mechanics of fluids. This interest was enforced last year when I had the opportunity to attend a lecture on fluid mechanics at P&G. At the conference I greatly expanded my knowledge regarding the physical aspect of fluids and their properties. In last year's AS course we have met a topic in this field. I will be applying ideas and knowledge gathered from last year for this investigation.
The Andragogical model is characterized by six assumptions that have emerged from research. The first assumption titled, “the need to know” describes the idea that, “Adults need to know why they need to learn something before undertaking to learn it” (Knowles, Holton & Swanson, 2015, p. 43). “The learner’s self-concept”, describes the second Andragogical model assumption as, “Adults have a self-concept of being responsible for their own decisions, for their own lives” (Knowles et al., 2015, p. 44). The third assumption of the Andragogical model is “the role of the learners’ experiences”. Knowles et al. (2015), describe this as, “Adults come into an educational activity with both a greater volume and a different quality of experience from that of youths” (p. 44). “Readiness to learn” describes the fourth Andragogical model assumption as, “Adults become ready to learn those things they need to know and be able to do in order to cope effectively with their real-life situations” (Knowles et al., 2015, p. 45). The fifth Andragogical model assumption is “orientation to learning”. Knowles et al. (2015), describes this level as, “Adults are motivated to learn to the extent that they perceive that learning will help them perform tasks or deal with problems they confront in their life situations” (p. 46). “Motivation” describes the sixth level
Projectile motion is used in our daily lives, from war, to the path of the water in the water fountain, to sports. When using a water fountain or hose, projectile motion can be used to describe the path and motion of the water. This technology was created by finding the angle at which the water would come out at a maximum height and the person using it would be able to drink it without leaning over too much. These types of projectile motion will be further explored and analyzed in this assessment.