Two-Phase Flow Modeling of Cryogenic Loading Operations

We consider problem of modeling and controlling two-phase cryogenic flows during ground loading operations. We introduce homogeneous moving front and separated two-phase flow solvers that are capable of fast and accurate online predictions of flow dynamics during chilldown and transfer under nominal conditions and in the presence of faults. Concise sets of cryogenic correlations are proposed in each case. We present results of application of proposed solvers to the analysis of chilldown in large-scale experimental cryogenic transfer line build in Kennedy Space Center. We discuss optimization of parameters of cryogenic models obtained using general inferential framework and an application of the solvers to the fault detection and evaluation based on D-matrix approach. It is shown that solver’s predictions are in good agreement with experimental data obtained for liquid nitrogen flow in nominal regime and in the presence of faults

Physics Based Model for Online Fault Detection in Autonomous Cryogenic Loading System

We report the progress in the development of the chilldown model for rapid cryogenic loading system developed at KSC. The nontrivial characteristic feature of the analyzed chilldown regime is its active control by dump valves. The two-phase flow model of the chilldown is approximated as one-dimensional homogeneous fluid flow with no slip condition for the interphase velocity. The model is built using commercial SINDAFLUINT software. The results of numerical predictions are in good agreement with the experimental time traces. The obtained results pave the way to the application of the SINDAFLUINT model as a verification tool for the design and algorithm development required for autonomous loading operation

The Grizzly, March 27, 2003

America at War: President Bush says Victory is Certain in Iraq • A Day in the Life of a UN Weapons Inspector • Celebrate Women\u27s History Month • A Fine Ursinus Fellow • Project Vote Smart Approves Five Scholarships for Ursinus College Students • Psyched up for Psycho Beach Party • Calling All Talents • Silence Broken: Korean Comfort Women • Men\u27s Basketball Falls to Scranton • Howard Earns All-American Honors • Dougherty 11th at NCAA Track Championshipshttps://digitalcommons.ursinus.edu/grizzlynews/1532/thumbnail.jp

What do the TOSCA guilt and shame scales really measure: Affect or action?

Psychologists have long used the Test of Self-Conscious Affect (TOSCA) as an instrument for empirically distinguishing between trait emotions of guilt and shame. Recent assessments of the internal structure of the TOSCA guilt scale suggest that it may not measure the experience of guilt, but rather motivation to make amends for personal wrongdoing. In contrast, TOSCA shame may better assess the tendency to experience negative self-conscious affect. Previous research did not take into account that TOSCA guilt theoretically should only predict emotions in a situation of wrongdoing; we put this idea to the test in two studies. Experimental, but not control, participants received believable feedback that they had shown involuntary prejudice towards a member of a minority group. In both studies TOSCA guilt predicted reparative action after feedback was given, including expressing non-prejudiced views and recommending financial compensation to the minority group. However, TOSCA guilt had no relationship with feelings of guilt or shame after expressing prejudice. In contrast, TOSCA shame was a better predictor of feelings of guilt, shame and other self-critical emotions, but did not predict compensatory action. These findings suggest motivation rather than emotion as a mechanism behind past findings involving TOSCA guilt

Differential relations between two types of contact and implicit and explicit racial attitudes

Contact with out-group members has been associated with more favourable explicit attitudes towards the out-group in general, largely via the mediation of reduced intergroup anxiety. In addition, there is now a growing body of evidence suggesting that contact relates to automatically activated evaluations termed implicit attitudes. However, research has not fully illuminated the mechanisms through which contact with outgroup members impacts on implicit attitudes. A study investigating this issue assessed White participants' (N=105) explicit attitudes, implicit attitudes, intergroup anxiety, and contact quantity and quality about Asians. Greater contact quality was related to more positive explicit attitudes, while contact quantity was associated with more positive implicit attitudes. Both effects were mediated by reduced intergroup anxiety