Results 11 to 20 of about 1,563,368 (312)
Critical and Flow-Critical Snarks Coincide [PDF]
Discussiones Mathematicae Graph Theory, 2021 Over the past twenty years, critical and bicritical snarks have been appearing in the literature in various forms and in different contexts. Two main variants of criticality of snarks have been studied: criticality with respect to the non-existence of a ...
Máčajová Edita, Škoviera Martin
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Electronic Notes in Discrete Mathematics, 2008 Abstract In this paper we introduce the concept of k-flow-critical graphs. These are graphs that do not admit a k-flow but such that any smaller graph obtained from it by contraction of edges or of pairs of vertices is k-flowable. Any minimal counter-example for Tutte's 3-Flow and 5-Flow Conjectures must be 3-flow-critical and 5-flow-critical ...
Cândida Nunes da Silva +1 more
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Critical Flow – Towards a Construction Flow Theory
, 2006 This paper introduces the concept of Construction Physics as a more comprehensive way of understanding the construction process from a flow perspective. It establishes a preliminary definition of the term and investigates briefly the present knowledge, flow models and methods for their management.
Bertelsen, S +3 more
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Superfluid flow above the critical velocity [PDF]
Scientific Reports, 2017 Superfluidity and superconductivity have been widely studied since the last century in many different contexts ranging from nuclear matter to atomic quantum gases.
A. Paris-Mandoki +5 more
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European Journal of Combinatorics, 2022 A bridgeless graph $G$ is called $3$-flow-critical if it does not admit a nowhere-zero $3$-flow, but $G/e$ has for any $e\in E(G)$. Tutte's $3$-flow conjecture can be equivalently stated as that every $3$-flow-critical graph contains a vertex of degree three. In this paper, we study the structure and extreme edge density of $3$-flow-critical graphs. We
Jiaao Li +4 more
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Flow resistance in skimming flow: A critical review [PDF]
, 2020 During very large rainfall events, dams and weirs must be equipped with adequate flood release facilities for a safe dissipation of the kinetic energy of the flow. With stepped spillway design, it is essential to predict accurately the flow resistance associated with the steps.
Chanson, H., Yusuda, Y., Ohtsu, I.
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The critical 2d Stochastic Heat Flow
Inventiones mathematicae, 2023 AbstractWe consider directed polymers in random environment in the critical dimension $$d = 2$$ d = 2 , focusing on the intermediate disorder regime when the model undergoes a phase transition. We prove that, at criticality, the diffusively
Caravenna F., Sun R., Zygouras N.
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Distributions of critical flux: modelling, experimental analysis and consequences for cross-flow membrane filtration [PDF]
, 2005 This paper discusses the distribution of critical flux (DCF) in cross flow filtration. These distributions are described here by a normal function with a mean critical flux and its standard deviation.
Bacchin, Patrice +2 more
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A Critical Flow Model for Supercritical Pressures
Frontiers in Earth Science, 2020 The investigation of critical flow model for supercritical pressure condition is relatively rare. Based on isentropic flow and thermal equilibrium assumptions, a model is derived to calculate discharge flow rate and critical pressure.
Yufeng Lv, Minfu Zhao, Kaiwen Du
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An Investigation into Sub-Critical Choke Flow Performance in High Rate Gas Condensate Wells
Energies, 2019 There have been some correlations in the literature to predict the gas and liquid flow rate through wellhead chokes under subcritical flow conditions. The majority of these empirical correlations have been developed based on limited production data sets ...
Hamid Reza Nasriani +6 more
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