This website uses cookies to ensure you have the best experience. Learn more

Computational Flow And Shock Analysis Of De Laval Nozzle

1368 words - 5 pages

Computational Flow Analysis and Shock Analysis of
De Laval Nozzle
Varun Upadhyay
(Mechanical dept,)
Abhiraj Parmar
(Mechanical dept,)
Rohan Pandey
(Mechanical dept,)
Abstract- A nozzle is a device which converts pressure energy of fluid into the kinetic energy. A De Laval nozzle has
many practical applications like they are used in rockets,
intake manifolds etc. Analysis of a De Laval nozzle involves
computation of throat and exit diameters and also divergence
angle of diffuser. In this paper we have analytically
determined the diameters of throat and exit and determined
divergence angle with CFD performed in Fluent. Also we
have done the shock analysis of the nozzle at different back
Index Term - De Laval Nozzle, Shock Analysis, CFD, Fluent.
1.1 Nozzle
Nozzle is a mechanical device designed to control the
direction or characteristics of a fluid flow. It is a specially
shaped tube through which hot gases flow. Nozzles are
frequently used to control the rate of flow, speed,
direction, mass, shape, and/or the pressure of the stream that
emerges from them. Nozzles come in a variety of shapes and
sizes depending on the mission of the aircraft. Simple turbojets,
and turboprops, often have a fixed geometry convergent
nozzle. Turbofan engines often employ a co-annular nozzle.
The core flow exits the center nozzle while the fan flow exits
the annular nozzle. Mixing of the two flows provides some
thrust enhancement and these nozzles also tend to be quieter
than convergent nozzles. Afterburning turbojets and
turbofans require a variable geometry convergent-divergent
- CD nozzle. In this nozzle, the flow first converges down
to the minimum area or throat, and then is expanded
through the divergent section to the exit at the right. The
variable geometry causes these nozzles to be heavier than a
fixed geometry nozzle, but variable geometry provides efficient
engine operation over a wider airflow range than a simple fixed
1.2 Types of nozzles:
1.2.1 High Velocity nozzle
In this nozzle the goal is to increase the kinetic energy of the
flowing medium at the expense of its pressure and internal

energy. These nozzles are converging-diverging nozzles in
which the fluid is accelerated to reach the high velocity. In
these the density of the gas changes due to change in
temperature and pressure, for very high gas speed the shape is
changed to convergent divergent. Figure 1.1 is showing the
diagram of high velocity nozzle where the outgoing velocity is
increased due to increase in area.
1.2.2 Propelling Nozzle
A jet exhaust produces a net thrust from the energy
obtained from combusting fuel which is added to the
inducted air. This hot air is passed through a high speed nozzle,
a propelling nozzle which enormously increases its kinetic...

Find Another Essay On Computational Flow and Shock Analysis of De Laval Nozzle

Equity, Cash Flow, and Notes Analysis Paper of Samsung Electronics

1444 words - 6 pages Statement of Cash Flow reports 3,446,700 in Cash and Cash Equivalents at the end of the year 2003. The first section of the Statement of Cash Flows reports the cash from operating activities. The first line item is the organization's net income (4,980,992) as reported on the organization's income statement. Next, the following items are added to the net income in order to reconcile net income to the net cash provided by operating activities

Cash flow analysis of Hindustan Unilever

903 words - 4 pages - Rs.20,000 Rs.20 75 - - Rs.1,20,000 Rs.30,000 - 75 6,000 Rs.25,000 Rs.10,000 - Rs.30 - 5,000 Rs.50,000 - Rs.15,000 POR Ltd. Report the following results for the year ended 31st March,2008 Sales Rs.2,00,000,Variable cost Rs.1,20,000, Fixed cost Rs.50,000, Net Profit Rs.30,000. Construct a Profit Volume graph and also verify the same with the mathematical analysis. Q.3 From the following

Ratio Analysis and Statement of Cash Flow: The Proctor and Gamble Company

1467 words - 6 pages All company accounts are prepared in accordance with the various accounting laws and regulations, and are designed for a wide audience. Therefore, to obtain data for specific purposes it is frequently necessary to submit the numbers to specific analysis. Following is an analysis of The P&G Corporation's year 2004 and 2005 financial statements. This analysis is intended to, through the calculation of ratios; assess the short-term and long

Dangers of Electrical Shock and Safety Measures for Prevention

916 words - 4 pages faulty electric source. Dry skin is more resistive to current than the wet skin so dry skin naturally protects skin against the burn injuries. If the victim survives after cardio respiratory failure, the damage to the neurovascular system leads to death. 3. Extent of body injury The extent of body injury by electrical shock depends on three key factors: the leakage current’s amplitude, duration of flow and path of flow of current through body. a

Nature and the Free Flow of Emotion

1323 words - 5 pages he returned to England he was reunited with his sister and became friends with another great romantic poet, Coleridge. The two poets met often and eventually wrote Lyrical Ballads (Everett, Biography). Wordsworth devoted his work to nature and the free flow of emotion which he called the “real language of men” (Fralin, Poetry Analysis). In “The World Is Too Much With Us,” Wordsworth appears to be speaking out against almost everybody during the

Filmmaker's Use of Shock in Psycho and Jaws

1835 words - 8 pages Shock is a feeling of fascination and excitement mixed with anxiety, tension, suspense and surprise developed from an unpredictable, mysterious, and engaging source of entertainment (Merriam-Webster). Shock can occur whenever there is a perceived suspended drama, with tension, suspense or surprise being the primary emotions felt by the audience as part of the situation (Dirks). However, the term is most often used in regards to an audience’s

Vehicular flow analysis using trace element biomonitoring of tree barks in streets and avenues of São Paulo city

677 words - 3 pages similarities in composition and flow of traffic . The Al, Fe and Mn are the most abundant in these areas indicating related source to the ressuspension dust in the main express streets of the quadrants. These quadrants are near the Tietê highway showing the influence of high flow traffic in a range of about 3 km. Quadrants 3, 7, 10, 11 have higher concentrations of Zn used as a lubricant additive derived from wear and vehicle parts, especially the brakes

Ratio Analysis & Statements of Cash Flow Final Report

3167 words - 13 pages along with an evaluation of operating leverage. Finally, Team A will compare areas of cash flow, operating, risk management, and profitability analysis for Target and Wal-Mart.History of Wal-MartOn July 2, 1962, Walton opened the first Wal-Mart store, Wal-Mart Discount City. Within five years the company expanded to 24 stores across the state of Arkansas and reached $12.6 million in sales. The company was incorporated as Wal-Mart Stores, Inc. on


1540 words - 7 pages - 4.5 deg The modified pistons are used for this study to analyze the best air flow and turbulence, the CATIA models of these pistons are shown in figure2.2 Figure 2.2 Modified Piston in CATIA with (a) Tangential Groove width is 5.5mm (b) ) Tangential Groove width is 6.5mm (c) ) Tangential Groove width is 7.5mm 3. Results and discussions The pistons are fabricated as per the design from the CATIA model, the photographs of these pistons were

Analysis of Catherine de Medici's Reign

2312 words - 9 pages Catherine’s historical analysis thus far, revealing the ‘politique’ whose moderate policies were a force for stability. Knecht is most convincing in his assertion that whilst the ‘Black Legend’ is a misrepresentation of her character and policies, Sutherland goes too far in whitewashing Catherine. Ironically, Catherine as a ‘politique’ aimed for complex policies and yet her role in French politics was over-simplified by contemporaries and arguably even

Topic: Cell Free Plasma DNA as a Predictor of Outcome in Severe Sepsis and Septic Shock

555 words - 2 pages real time quantitative PCR method.A standard curve of 10 fold serial dilution of human genomic DNA (Roche) was used in the analysis of the data as well as chi-square to test for variables.The area under the curve with a 95% CIs was used to study the sensitivity and specificity to ensure a greater predictive value with P < 0.05 being significant.Result:Cell free plasma DNA for survivors at admission: 8070 GE/mL 72hrs later 7457 Ge/mL wCell free

Similar Essays

A Mathematical Analysis Of Computational Complexity

3290 words - 14 pages }^{\mathbf{m}}$, of conjunctions over unsatisfiable or no. Our interest is theoretical although simulations of parallel computation can be performed using cards introduce here. On showing that the decision process for a card can be performed polynomially, we built a new path to understand computational complexity questions and in future works, we will establish more bounds in complexity questions. A precise definition of {\em algorithm} was

Design And Flow Analysis Of Electromagnetic Plasma Arc Propulsion System

1583 words - 7 pages propellant is same. so here more pressure occur in inlet section and low pressure occur in nozzle section. The analysis of velocity contour of the electromagnetic plasma arc propulsion system as shown in figure 8. Here change an electromagnetic field compared to previous analysis. We can identified from figure the velocity value is more in exit nozzle when compared to the inlet section. So turbulence flow occur in exit of the quartz tube .Here very

An Analysis Of Procter & Gamble Equity, Cash Flow, And Notes

1982 words - 8 pages , prestige fragrances and skin care. Pet Nutrition and care products include pet health nutrition products.P&G's goal is to deliver continue sales growth in order to exceed its financial goals. With a strong and consistent performance they were able to meet their goals in the fiscal year 2004: Volume was up 17%, sales increase by 19% to $51.4 billion and earnings were up 25% with a free cash flow of $7.3 billion. To analyze where this increase come

Ratio Analysis And Statement Of Cash Flow: Wendy's Vs. Mc Donald's

1502 words - 6 pages Cash flow is the lifeblood of all businesses, regardless of size; if a company has no cash flow it would have to cease doing business. For the McDonald's Corporation, cash flow from operating during the time period ending December 2004 was $3,903,600,000. The balance sheet of McDonald's also reveals that the cash flow generated by investing was $1,383,100,000 through December 31, 2004, according to annual data, and cash flow from financial