L. Friedel

2.2k total citations · 1 hit paper
78 papers, 1.7k citations indexed

About

L. Friedel is a scholar working on Mechanical Engineering, Biomedical Engineering and Computational Mechanics. According to data from OpenAlex, L. Friedel has authored 78 papers receiving a total of 1.7k indexed citations (citations by other indexed papers that have themselves been cited), including 44 papers in Mechanical Engineering, 27 papers in Biomedical Engineering and 23 papers in Computational Mechanics. Recurrent topics in L. Friedel's work include Fluid Dynamics and Mixing (20 papers), Hydraulic and Pneumatic Systems (18 papers) and Heat Transfer and Boiling Studies (17 papers). L. Friedel is often cited by papers focused on Fluid Dynamics and Mixing (20 papers), Hydraulic and Pneumatic Systems (18 papers) and Heat Transfer and Boiling Studies (17 papers). L. Friedel collaborates with scholars based in Germany, Algeria and Jordan. L. Friedel's co-authors include Jürgen Schmidt, Abdelwahid Azzi, J. Reimann, B. Shannak, Kai Fischer, Thomas Höhne, Oliver Ludwig, G. Schewe, R. H. Schuster and R. Schuster and has published in prestigious journals such as Journal of Hazardous Materials, International Journal of Multiphase Flow and Fluid Phase Equilibria.

In The Last Decade

L. Friedel

76 papers receiving 1.5k citations

Hit Papers

Improved Friction Pressure Drop Correlation for Horizonta... 1979 2026 1994 2010 1979 250 500 750
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. Improved Friction Pressure Drop Correlation for Horizontal and Vertical Two-Phase Pipe Flow
    1979 790 citations L. Friedel profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
L. Friedel Germany 16 1.4k 451 386 332 83 78 1.7k
H.M. Soliman Canada 27 1.6k 1.2× 890 2.0× 861 2.2× 513 1.5× 119 1.4× 114 2.1k
N. K. Anand United States 24 1.1k 0.8× 634 1.4× 994 2.6× 236 0.7× 193 2.3× 104 1.8k
Andrea Cioncolini United Kingdom 24 1.3k 1.0× 700 1.6× 708 1.8× 374 1.1× 97 1.2× 91 1.9k
K.S. Rezkallah Canada 18 663 0.5× 540 1.2× 379 1.0× 217 0.7× 99 1.2× 45 1.1k
H. Auracher Germany 20 1.3k 0.9× 272 0.6× 485 1.3× 198 0.6× 32 0.4× 50 1.5k
M. Cumo Italy 26 1.6k 1.2× 665 1.5× 762 2.0× 539 1.6× 87 1.0× 114 2.1k
H. Beer Germany 18 839 0.6× 429 1.0× 639 1.7× 170 0.5× 38 0.5× 89 1.3k
M. A. Ebadian United States 26 1.6k 1.1× 944 2.1× 1000 2.6× 230 0.7× 97 1.2× 109 2.3k
A. M. C. Chan Canada 15 499 0.4× 375 0.8× 361 0.9× 201 0.6× 70 0.8× 35 746
Janusz Badur Poland 22 724 0.5× 273 0.6× 260 0.7× 146 0.4× 52 0.6× 129 1.3k

Countries citing papers authored by L. Friedel

Since Specialization
Citations

This map shows the geographic impact of L. Friedel's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by L. Friedel with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites L. Friedel more than expected).

Fields of papers citing papers by L. Friedel

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by L. Friedel. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by L. Friedel. The network helps show where L. Friedel may publish in the future.

Co-authorship network of co-authors of L. Friedel

This figure shows the co-authorship network connecting the top 25 collaborators of L. Friedel. A scholar is included among the top collaborators of L. Friedel based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with L. Friedel. L. Friedel is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Friedel, L., et al.. (2010). Critical air/water blow-down in safety valves at low qualities. Journal of Hazardous Materials. 186(2-3). 2162–2165. 1 indexed citations
2.
Friedel, L., et al.. (2009). Single and two-phase flows of shear-thinning media in safety valves. Journal of Hazardous Materials. 168(2-3). 1521–1526. 4 indexed citations
3.
Schmidt, Jürgen, et al.. (2007). Measurement of the triethylene glycol solubility in supercritical methane at pressures up to 9MPa. Fluid Phase Equilibria. 264(1-2). 253–258. 21 indexed citations
4.
Friedel, L., et al.. (2005). Reproductive accuracy of safety valve two-phase mass flow capacity models in case of air/water, resp., viscous liquid flow duty. Forschung im Ingenieurwesen. 70(2). 133–138. 3 indexed citations
5.
Friedel, L., et al.. (2004). Droplet Velocity in Horizontal Two‐phase Air/Water Free Jet Flow in Stagnant Ambient. Chemical Engineering & Technology. 27(8). 852–856. 5 indexed citations
6.
Friedel, L., et al.. (2003). Geschwindigkeit der Tropfen in horizontalen Zweiphasen‐Freistrahlen aus Wasser und Luft in ruhender Umgebung. Chemie Ingenieur Technik. 75(7). 859–864. 1 indexed citations
7.
Friedel, L., et al.. (2001). Sizing of safety valves and connected inlet and outlet lines for gas/liquid two-phase flow. TU/e Research Portal (Eindhoven University of Technology). 455–492. 2 indexed citations
8.
Friedel, L., et al.. (2001). Applicability of laboratory heterogeneous liquid–liquid phase reaction kinetic data for relief vent design. Journal of Loss Prevention in the Process Industries. 14(1). 77–82. 2 indexed citations
9.
Friedel, L., et al.. (2001). Validated sizing rule against chatter of relief valves during gas service. Journal of Loss Prevention in the Process Industries. 14(4). 261–267. 14 indexed citations
10.
Azzi, Abdelwahid, et al.. (2000). Two-phase gas/liquid flow pressure loss in bends. Forschung im Ingenieurwesen. 65(10). 309–318. 22 indexed citations
11.
Wieczorek, M. A., et al.. (1999). Extrapolation of Laboratory Reaction Kinetic Data for Relief Vent Design in the Case of a Heterogeneous Runaway Reaction. Journal of Thermal Analysis and Calorimetry. 58(1). 171–181. 2 indexed citations
12.
Friedel, L., et al.. (1999). Predictive Accuracy of Design Methods for the Relief Cross-Sections on Chemical Reactors in the Case of Two-Phase Flow Discharge. Chemical Engineering & Technology. 22(7). 575–579. 2 indexed citations
13.
Friedel, L., et al.. (1998). Critical mass flow rate in accordance with the omega-method of DIERS and the Homogeneous Equilibrium Model. Journal of Loss Prevention in the Process Industries. 11(6). 391–395. 2 indexed citations
14.
Friedel, L., et al.. (1998). Two-phase jet dispersion. Journal of Hazardous Materials. 59(2-3). 287–310. 21 indexed citations
15.
Schmidt, Jürgen & L. Friedel. (1997). Two-phase pressure drop across sudden contractions in duct areas. International Journal of Multiphase Flow. 23(2). 283–299. 76 indexed citations
16.
Schmidt, Jürgen & L. Friedel. (1996). TWO-PHASE FLOW PRESSURE CHANGE ACROSS SUDDEN EXPANSIONS IN DUCT AREAS. Chemical Engineering Communications. 141-142(1). 175–190. 20 indexed citations
17.
Friedel, L.. (1992). Dynamics of Multiphase Media, Vols. 1 and 2. Chemical Engineering and Processing - Process Intensification. 31(3). 205–206. 20 indexed citations
18.
Friedel, L., et al.. (1990). Mechanistic prediction model for leakage rates through cracks. Experimental Thermal and Fluid Science. 3(5). 540–549. 2 indexed citations
19.
Friedel, L., et al.. (1984). Phase distribution in vessels during depressurisation. International Journal of Heat and Fluid Flow. 5(4). 229–234. 8 indexed citations
20.
Friedel, L., et al.. (1983). Druckentlastung von Gas/Dampf-Fluessigkeitssystemen.. 143–164. 1 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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