ESDU 01014 is one of a group of Data Items on the prediction of
\npressure drop in two-phase gas-liquid mixtures in piping systems.
\nIt provides the engineer with techniques for the assessment of the
\nfrictional pressure gradient in gas-liquid mixture flows in
\nhorizontal pipes and allows estimates to be made of the accuracy of
\nthe predictions.<\/p>\n
By means of a statistical analysis, method selection charts are
\ndeveloped that show, for ranges of both the mass quality of the gas
\ncomponent and the mixture mass flux, the order of ranking in
\naccuracy of selected empirical correlations. As a result the
\nbest-performing correlation is recommended for any practical set of
\nconditions. Using performance charts the pressure gradient
\npredictions can be made and the likely errors involved for each
\ncorrelation within those conditions can be assessed.<\/p>\n
Specific empirical correlations may be more suitable for a given
\nflow pattern. Thus, where flow pattern data are available,
\ncomparisons between the empirical correlations and the pressure
\ndrop data are also classified by means of a statistical analysis in
\nterms of flow pattern and mass quality of the gas component. These
\nresults are included in further selection and performance
\ncharts.<\/p>\n
Underpinning the work is a database of gas-liquid frictional
\npressure drop measurements in horizontal flows. This database
\ncontains nearly 6500 carefully selected and evaluated data points
\nand is comparable in size (for the specific case of horizontal
\nflows) with previous databases. In the validation process, many
\nmore thousands of data points were rejected as being
\nunreliable.<\/p>\n
The use of the methods is illustrated by worked examples.<\/p>\n","protected":false},"excerpt":{"rendered":"
Frictional Pressure Gradient in Adiabatic Flows of Gas-Liquid Mixtures in Horizontal Pipes: Prediction Using Empirical Correlations and Database<\/b><\/p>\n\n\n
\n Published By<\/td>\n Publication Date<\/td>\n Number of Pages<\/td>\n<\/tr>\n \n ESDU<\/b><\/a><\/td>\n 2012-11<\/td>\n 75<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":557242,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2675],"product_tag":[],"class_list":{"0":"post-557235","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-esdu","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/557235","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/557242"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=557235"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=557235"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=557235"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}