a) Flow on a layer surface (b) Flow near a producer well Fig. 1: Visualization of a 3D oil flow of a black-oil reservoir model.Abstract-In the oil industry, clear and unambiguous 3D flow visualization techniques are very important to inspect the results of numerical simulation of black-oil reservoir models. In this paper, we revisit the use of line integral convolution (LIC) for imaging 3D vector fields on arbitrary surfaces and apply it to reservoir visualization. We use a GPU-based method to image the tangential component using the conventional 2D LIC in projected screen space and propose the use of color to encode the normal component. To attach the flow imaging to the 3D surfaces, avoiding image flickering while manipulating the model, we propose a simple scheme based on randomly generated texture coordinate, avoiding the use of a solid 3D texture noise. For animation, we adjust the use of filters to ensure that the animation speed varies in accordance to the field magnitude. We also explore the visualization of multiphase (oil, gas, and water) flow.
Resumo. O objetivo deste estudo foi avaliar diferentes processos de fabricação de pós compactos faciais e estabelecer a preferência dos consumidores através de análise sensorial. Foram formulados 4 pós faciais tratados respectivamente por: micronização, pulverização (moinho de martelos), adição de matéria prima modificadora de sensorial e simples mistura. Os pós foram compactados, passando pelos testes de vitrificação, desprendimento de cor e drop test, sendo posteriormente encaminhados à avaliação sensorial realizada por 45 voluntárias. Nos testes de compactação, drop test, vitrificação e desprendimento de cor, a amostra micronizada obteve os melhores resultados mostrando que a redução do tamanho das partículas influencia no empacotamento de pós e melhoram a compactação do produto, porém na análise sensorial a amostra obtida por simples mistura foi a preferência da maioria das voluntárias. Percebeu-se que, apesar dos melhores resultados de compactação obtidos pelas amostras micronizadas, a preferência das voluntárias ainda está ligada aos processos de fabricação mais antigos onde o pó resultante se mostra mais grosseiro e forma uma camada mais espessa sobre a pele. Palavras-chave: Pós faciais. Compactação. Tamanho de partículas. Avaliação sensorial.Abstract. The aim of this study was to evaluate different manufacturing processes of compact powders and establish consumer preferences through sensory analysis. Four compact powders were formulated with the following treatments: micronization, hammer mill, addition of raw materials that modify the sensory, and simple mixture. The powders were compressed, passing the tests for glazing, detachment of color and drop test, and later forwarded to sensory evaluation by 45 volunteers. In the compression tests, drop test, glazing and detachment of color, the micronized sample obtained the best results showing the reduction of particle size influences the packaging of powders and improves the compression of the product, but in the sensory analysis the sample obtained by simple mixture was the preference of most of the volunteers. It was felt that, despite the best compaction results are obtained for samples micronized, the preference of the volunteers is still linked to older manufacturing processes where the resulting powder shows more coarse and form a thicker layer on the skin.
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