scholarly journals Analysis and modernization of real gas thermodynamic calculation for turbocompressors and detander units

2018 ◽  
Vol 245 ◽  
pp. 09005 ◽  
Author(s):  
Aleksey Aksenov ◽  
Yury Kozhukhov ◽  
Mihail Sokolov ◽  
Anatolei Simonov
Keyword(s):  
Thermodynamic Calculation ◽  
Software Implementation ◽  
Auxiliary Equipment ◽  
Real Gas ◽  
Work Analysis ◽  
The Real ◽  
The Third ◽  
Fourth Part ◽  
Writing Analysis

In this work analysis, modernization and software implementation and an algorithm for thermodynamic calculation on the basis of the Benedikt-Webb-Rubin actual gas equation are performed. The work includes writing, analysis and modernization of the real gas thermodynamic calculation program. In the first part of the work data were processed to calculate real gas. In the second part, the development of the algorithm for thermodynamic calculation and its modifications is carried out. In the third part, the analysis of this algorithm is performed, revealing the main shortcomings and limits of applicability. In the fourth part of the work, the algorithm was implemented in the form of computational modules and programs, and also practical testing of these programs in the calculation of gas compressor and auxiliary equipment.

scholarly journals CONRAD-MARTIUS: BEING, ESSENCE, EXISTENCE. IN DISCUSSION WITH ARISTOTLE’S, AQUINAS’ AND HUSSERL’S ONTOLOGIES AND METAPHYSICS

2021 ◽  
Vol 10 (2) ◽  
pp. 360-397
Author(s):  
IRENE BREUER ◽  
Keyword(s):  
The Real ◽  
Transcendental Reduction ◽  
The Third ◽  
Fourth Part ◽  
Phenomenological Reflection ◽  
Real Entity ◽  
Shed Light

The article deals with Conrad-Martius’ conception of being and existence and explores it by contrasting it with the conceptions of Aristotle, Aquinas and Husserl within the framework of their respective ontologies and metaphysics. The article delves into the problems of both the hypostatization and the origin of being in particular. I claim that the hypostatization of being does not concern the Sachverhalt, as Jean Wahl claims, but the noema itself insofar as intentionality transcends what is constituted by consciousness and grasps the essence of the substance itself, whose existence is not absolutely but hypothetically posited. I will further show that even though Conrad-Martius rejects the transcendental reduction, she accepts the eidetic reduction and the positing of a sphere of original and given facts, which are not only absolutely given to consciousness, but also self-grounded and self-sustained. Conrad-Martius’ research traces the origin of these back to a transphysical realm, thus revealing the grounds for the Husserlian sphere of primal facts, which itself remains beyond the reach of phenomenological reflection. Hence Conrad-Martius’ and Husserl’s investigations encounter and complement each other at the point where the real bursts into reality and becomes available to consciousness. These reflections are organized as follows: The first part presents Conrad-Martius’ conception of a real-ontological phenomenology in order to examine her criticism of Husserl’s transcendental reduction. The second part deals with her real-ontological conception of the essence of reality or the “real-reality” and its hypothetically posed existence. The third part concerns the conceptions of being, analogia essendi and categorial being with recourse to Aristotle, Aquinas and Husserl and sets these in relation to Conrad-Martius’ own conception. The fourth part deals with her own understanding of the analogia essendi and of real being in order to shed light on the claim concerning the hypostatization of being. The fifth part explores Husserl’s positing of a sphere of primal facticity, Conrad-Martius’ conception of a real entity and its origin in a transphysical realm. The article finally summarizes the main results of these reflections.

ON THE THERMODYNAMICAL STABILITY OF THE PLASMA OF GAS DISCHARGE IN THE REAL GAS

1979 ◽  
Vol 40 (C7) ◽  
pp. C7-677-C7-678
Author(s):  
S. W. Temko ◽  
K. W. Temko ◽  
S. K. Kuzmin
Keyword(s):  
Gas Discharge ◽  
Real Gas ◽  
The Real

In our society, the proportion of youth is higher than any other society. They are important in this regard. But the real question is whether his views, trends and likes and dislikes are different from other generations of society in political terms. What

Think India ◽  
2019 ◽  
Vol 22 (3) ◽  
pp. 680-686
Author(s):  
Azad Pratap Singh
Keyword(s):  
The Elderly ◽  
Fundamental Difference ◽  
The West ◽  
Green Party ◽  
The Real ◽  
The Third ◽  
English Speaking ◽  
Education And Employment ◽  
Political Understanding ◽  
Separate Class

In our society, the proportion of youth is higher than any other society. They are important in this regard. But the real question is whether his views, trends and likes and dislikes are different from other generations of society in political terms. What is the reason for the tendency to see youth as a separate class. That we borrow the principles of politics from the West, where the distinction of generations is more important factor in politics than the distinction of community or class. At one time, parties like the Labor Party and the Green Party have been standing mainly on the vote of the youth for some time. The second reason is that the image of the youth is based on the English-speaking youths living somewhere in the metros. We often consider him to be a symbol of youth. While in reality they are a very small part of our youth. And the third reason is that the part of change, revolution and the politics of change that had set the hopes of the youth are still there in our political understanding. The fact is that the youth class is not very different from the elderly or any other generation in terms of participation in politics, if different then it means that its participation is less than the other class because it is more concerned about education and employment. There is no fundamental difference between the vote of the youth and other generations in terms of voting or political choice. If there is a difference, then only in the sense that the parties who have come in the last 25-30 years have heard more about the youth, hence their choice is more. Older parties usually get little support from the youth. However, it is not related to its youth, because the information about that party is limited to certain people.

Sarakhsi’s Doctrine of Juristic Preference (Istihsan) as a Methodological Approach Toward Worldly Affairs (Ahkam al-Dunya)

1988 ◽  
Vol 5 (2) ◽  
pp. 181-203
Author(s):  
Husain Kassim
Keyword(s):  
Methodological Approach ◽  
The Third ◽  
Fourth Part

In the present investigation, we shall develop systematically Sarakhsrsdoctrine of Juristic preference from his Mabsut, Usul and Bab al-Muwada'aof Sharh al-Siyar al Kabir and demonstrate how Sarakhsi establishes itsrelevance as a methodological approach toward worldly affairs.The investigation is carried out in four parts:In the first part, we shall relate Sarakhsi’s doctrine of juristic preference(istihan) with his concept of treaties (muwada'a). According to Sarakhsimuwada'a is an autonomous discipline and its main focus is worldly affairsas relations (muamalat) of Muslims with other nations.In the second part, it is investigated how Sarakhsi strives to see thejustification for the application of the doctrine of juristic preference to itindependently of the doctrine of systematic reasoning (qiyas) by establishingthe ’illa (effective reasoning) of the doctrine of juristic preference on the basisof asl derived from the Qur’an and Hadith.In the third part, we shall discuss how Sarakhsi systematizes the doctrineof juristic preference by analyzing the ’illa employed by it in various formsand shows that it is connected with asl.Finally, in the fourth part, we shall show how Sarakhsi justifies theemployment of the doctrine of juristic preference as a methodological approachtoward muwadah and worldly affairs ...

The Meditations

2017 ◽  
Author(s):  
Walter Ott
Keyword(s):  
Perceptual Experience ◽  
Developmental Reading ◽  
Basic Structure ◽  
Brain Image ◽  
The Real ◽  
The Third ◽  
Real Work ◽  
Sensible Qualities ◽  
The Brain

Despite its difference in aspiration, the Meditations preserves the basic structure of perceptual experience outlined in Descartes’s earliest works. The chapter explores Descartes’s notion of an idea and uses a developmental reading to clear up the mystery surrounding material falsity. In the third Meditation, our protagonist does not yet know enough about extension in order to be able to tell whether her idea of cold is an idea of a real feature of bodies or merely the idea of a sensation. By the time she reaches the end of her reflections, she has learned that sensible qualities are at most sensations. As in his earliest stages, Descartes believes that the real work of perceiving the geometrical qualities of bodies is done by the brain image, which he persists in calling an ‘idea,’ at least when it is the object of mental awareness.

Kurshalten im Konflikt: Die an Wittenberg orientierten Siebenbürger Bekenntnisschriften und ihre Begutachtung an deutschen Universitäten (1557–1572)

2020 ◽  
Vol 8 (1) ◽  
pp. 71-88
Author(s):  
Robert Kolb
Keyword(s):  
Lord's Supper ◽  
The Real ◽  
The Third ◽  
Real Presence ◽  
German Universities

Abstract Groups of pastors in Siebenbürgen issued three confessions of faith between 1557 and 1572 – the Consensus Doctrinae (1557), the Brevis Confessio (1561), and the Formula pii consensus (1572) – in which they defended their view of the Lord’s Supper in line with Wittenberg teaching against medieval teaching and against challenges from Swiss Reformed theologians. These documents reflect both conditions in Siebenbürgen and the streams of thinking in the wider environment of Luther’s and Melanchthon’s followers. The Brevis Confessio was published with memoranda from four German universities and letters from several theologians supporting its formulations. The first two documents largely tend toward Luther’s expression of the doctrine of the real presence, while the third uses language employed by both Wittenberg teachers, avoiding controversial expressions. This last confession strives toward consensus among the followers of the Wittenberg preceptors.

scholarly journals Art Criticism and the State of Feminist Art Criticism

Arts ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 28
Author(s):  
Katy Deepwell
Keyword(s):  
Women Artists ◽  
Art Criticism ◽  
The State ◽  
Art World ◽  
Feminist Art ◽  
The Gaze ◽  
The Third ◽  
Fourth Part ◽  
State Of Art ◽  
First Offers

This essay is in four parts. The first offers a critique of James Elkins and Michael Newman’s book The State of Art Criticism (Routledge, 2008) for what it tells us about art criticism in academia and journalism and feminism; the second considers how a gendered analysis measures the “state” of art and art criticism as a feminist intervention; and the third, how neo-liberal mis-readings of Linda Nochlin and Laura Mulvey in the art world represent feminism in ideas about “greatness” and the “gaze”, whilst avoiding feminist arguments about women artists or their work, particularly on “motherhood”. In the fourth part, against the limits of the first three, the state of feminist art criticism across the last fifty years is reconsidered by highlighting the plurality of feminisms in transnational, transgenerational and progressive alliances.

Ancient Hinduism as a Missionary Religion

Numen ◽  
1992 ◽  
Vol 39 (2) ◽  
pp. 175-192 ◽  
Author(s):  
Arvind Sharma
Keyword(s):  
Tenth Century ◽  
Fifth Century ◽  
Historical Material ◽  
Textual Evidence ◽  
The Third ◽  
Fourth Part ◽  
History Of

AbstractThe paper is conceptually divided into four parts. In the first part the widely held view that ancient Hinduism was not a missionary religion is presented. (The term ancient is employed to characterize the period in the history of Hinduism extending from fifth century B.C.E. to the tenth century. The term 'missionary religion' is used to designate a religion which places its followers under an obligation to missionize.) In the second part the conception of conversion in the context of ancient Hinduism is clarified and it is explained how this conception differs from the notion of conversion as found in Christianity. In the third part the view that ancient Hinduism was not a missionary religion is challenged by presenting textual evidence that ancient Hinduism was in fact a missionary religion, inasmuch as it placed a well-defined segment of its members under an obligation to undertake missionary activity. Such historical material as serves to confirm the textual evidence is then presented in the fourth part.

Numerical Approach for Real Gas Simulations: Part II — Flow Simulation for Supercritical CO2 Centrifugal Compressor

2017 ◽  
Author(s):  
Swati Saxena ◽  
Ramakrishna Mallina ◽  
Francisco Moraga ◽  
Douglas Hofer
Keyword(s):  
Critical Point ◽  
Centrifugal Compressor ◽  
Supercritical Co2 ◽  
Operating Conditions ◽  
Inlet Guide Vane ◽  
Thermodynamic Quantities ◽  
3D Flow ◽  
Real Gas ◽  
The Real ◽  
Operating Range

This paper is presented in two parts. Part I (Tabular fluid properties for real gas analysis) describes an approach to creating a tabular representation of the equation of state that is applicable to any fluid. This approach is applied to generating an accurate and robust tabular representation of the RefProp CO2 properties. Part II (this paper) presents numerical simulations of a low flow coefficient supercritical CO2 centrifugal compressor developed for a closed loop power cycle. The real gas tables presented in part I are used in these simulations. Three operating conditions are simulated near the CO2 critical point: normal day (85 bar, 35C), hot day (105 bar, 50 C) and cold day (70 bar, 20C) conditions. The compressor is a single stage overhung design with shrouded impeller, 155 mm impeller tip diameter and a vaneless diffuser. An axial variable inlet guide vane (IGV) is used to control the incoming swirl into the impeller. An in-house three-dimensional computational fluid dynamics (CFD) solver named TACOMA is used with real gas tables for the steady flow simulations. The equilibrium thermodynamic modeling is used in this study. The real gas effects are important in the desired impeller operating range. It is observed that both the operating range (minimum and maximum volumetric flow rate) and the pressure ratio across the impeller are dependent on the inlet conditions. The compressor has nearly 25% higher operating range on a hot day as compared to the normal day conditions. A condensation region is observed near the impeller leading edge which grows as the compressor operating point moves towards choke. The impeller chokes near the mid-chord due to lower speed of sound in the liquid-vapor region resulting in a sharp drop near the choke side of the speedline. This behavior is explained by analyzing the 3D flow field within the impeller and thermodynamic quantities along the streamline. The 3D flow analysis for the flow near the critical point provides useful insight for the designers to modify the current compressor design for higher efficiency.

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