Holger Class

4.3k total citations · 1 hit paper
103 papers, 2.7k citations indexed

About

Holger Class is a scholar working on Environmental Engineering, Ocean Engineering and Mechanical Engineering. According to data from OpenAlex, Holger Class has authored 103 papers receiving a total of 2.7k indexed citations (citations by other indexed papers that have themselves been cited), including 80 papers in Environmental Engineering, 32 papers in Ocean Engineering and 30 papers in Mechanical Engineering. Recurrent topics in Holger Class's work include CO2 Sequestration and Geologic Interactions (49 papers), Groundwater flow and contamination studies (44 papers) and Hydraulic Fracturing and Reservoir Analysis (25 papers). Holger Class is often cited by papers focused on CO2 Sequestration and Geologic Interactions (49 papers), Groundwater flow and contamination studies (44 papers) and Hydraulic Fracturing and Reservoir Analysis (25 papers). Holger Class collaborates with scholars based in Germany, United States and United Kingdom. Holger Class's co-authors include Rainer Helmig, Anozie Ebigbo, Johannes Hommel, A. Kopp, Edward Coltman, Robin Gerlach, Sergey Oladyshkin, Wolfgang Nowak, Bernd Flemisch and Peter Bastian and has published in prestigious journals such as SHILAP Revista de lepidopterología, Journal of Power Sources and Scientific Reports.

In The Last Decade

Holger Class

100 papers receiving 2.6k citations

Hit Papers

align trajectories sort by overperformance

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.

Porosity–Permeability Relations for Evolving Pore Space: A Review with a Focus on (Bio-)geochemically Altered Porous Media

2018 239 citations Johannes Hommel, Holger Class et al. profile →

Author Peers

Peers are selected by citation overlap in the author's most active subfields. citations · hero ref

Author						Papers	Cites
Holger Class	1.7k	792	761	478	476	103	2.7k
Sergi Molins	1.8k 1.0×	718 0.9×	581 0.8×	394 0.8×	306 0.6×	56	2.6k
Abdullah Cihan	1.2k 0.7×	645 0.8×	601 0.8×	306 0.6×	381 0.8×	68	1.8k
Joaquín Jiménez‐Martínez	1.3k 0.8×	1.0k 1.3×	792 1.0×	614 1.3×	335 0.7×	83	3.0k
Auli Niemi	1.4k 0.8×	789 1.0×	942 1.2×	457 1.0×	300 0.6×	126	1.9k
G. Suresh Kumar	1.1k 0.6×	1.1k 1.4×	908 1.2×	595 1.2×	413 0.9×	193	3.0k
Wenqing Wang	954 0.5×	350 0.4×	732 1.0×	642 1.3×	568 1.2×	139	2.5k
Riyadh I. Al‐Raoush	831 0.5×	752 0.9×	514 0.7×	649 1.4×	581 1.2×	74	2.5k
Quanlin Zhou	3.1k 1.8×	1.3k 1.6×	1.6k 2.1×	654 1.4×	361 0.8×	95	3.7k
Grant Bromhal	2.1k 1.2×	1.6k 2.1×	1.3k 1.7×	1.0k 2.1×	154 0.3×	112	3.1k
Tim Scheibe	2.0k 1.1×	691 0.9×	400 0.5×	314 0.7×	448 0.9×	116	3.4k

Countries citing papers authored by Holger Class

Since Specialization

Citations

This map shows the geographic impact of Holger Class'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 Holger Class with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Holger Class more than expected).

Fields of papers citing papers by Holger Class

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Holger Class. 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 Holger Class. The network helps show where Holger Class may publish in the future.

Co-authorship network of co-authors of Holger Class

This figure shows the co-authorship network connecting the top 25 collaborators of Holger Class. A scholar is included among the top collaborators of Holger Class 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 Holger Class. Holger Class is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Class, Holger, et al.. (2025). Rayleigh Invariance Allows the Estimation of Effective CO₂ Fluxes Due To Convective Dissolution Into Water‐Filled Fractures. Water Resources Research. 61(2). 1 indexed citations

Class, Holger, et al.. (2025). Hydro-Geomechanical Porous-Media Model to Study Effects of Engineered Carbonate Precipitation in Faults. SHILAP Revista de lepidopterología. 2(2). IPJ040625–6.

Schneider, Martin, et al.. (2024). A novel geometry-informed drag term formulation for pseudo-3D Stokes simulations with varying apertures. Advances in Water Resources. 195. 104860–104860.

Huisman, Johan Alexander, et al.. (2024). Comparing Different Coupling and Modeling Strategies in Hydromechanical Models for Slope Stability Assessment. Water. 16(2). 312–312. 2 indexed citations

Class, Holger, et al.. (2023). Heat transport from atmosphere through the subsurface to drinking‐water supply pipes. Vadose Zone Journal. 22(6). 270–286. 1 indexed citations

Class, Holger, et al.. (2023). Seasonal Dynamics of Gaseous CO2 Concentrations in a Karst Cave Correspond with Aqueous Concentrations in a Stagnant Water Column. Geosciences. 13(2). 51–51. 4 indexed citations

Class, Holger, et al.. (2022). Berechnung von Temperaturfahnen im Grundwasser mit analytischen und numerischen Modellen. Grundwasser. 27(2). 113–129. 5 indexed citations

Gläser, Dennis, Bernd Flemisch, Holger Class, & Rainer Helmig. (2020). Frackit: a framework for stochastic fracture network generation and analysis. The Journal of Open Source Software. 5(56). 2291–2291. 4 indexed citations

Hommel, Johannes, et al.. (2020). A Numerical Model for Enzymatically Induced Calcium Carbonate Precipitation. Applied Sciences. 10(13). 4538–4538. 31 indexed citations

10.

Noack, Vera, et al.. (2017). Regional-scale brine migration along vertical pathways due to CO ₂ injection – Part 2: A simulated case study in the North German Basin. Hydrology and earth system sciences. 21(6). 2751–2775. 11 indexed citations

11.

Scheer, Dirk, et al.. (2017). Regional-scale brine migration along vertical pathways due to CO ₂ injection – Part 1: The participatory modeling approach. Hydrology and earth system sciences. 21(6). 2739–2750. 4 indexed citations

12.

Class, Holger, et al.. (2017). Experimental study on retardation of a heavy NAPL vapor in partially saturated porous media. Hydrology and earth system sciences. 21(3). 1381–1396. 4 indexed citations

13.

Noack, Vera, et al.. (2016). Brine migration along vertical pathways due to CO<sub>2</sub> injection – a simulated case study in the North German Basin with stakeholder involvement. 2 indexed citations

14.

Hommel, Johannes, Ellen G. Lauchnor, A. J. Phillips, et al.. (2015). A revised model for microbially induced calcite precipitation: Improvements and new insights based on recent experiments. Water Resources Research. 51(5). 3695–3715. 84 indexed citations

15.

Szymkiewicz, Adam, et al.. (2011). Modeling Two Phase Flow in Large Scale Fractured Porous Media with an Extended Multiple Interacting Continua Method. Computer Modeling in Engineering & Sciences. 77(2). 81–112. 27 indexed citations

16.

Ebigbo, Anozie, Rainer Helmig, Alfred B. Cunningham, Holger Class, & Robin Gerlach. (2010). Modelling biofilm growth in the presence of carbon dioxide and water flow in the subsurface. Advances in Water Resources. 33(7). 762–781. 64 indexed citations

17.

Kühn, Markus, et al.. (2009). Predictive modelling of Ketzin - CO2 arrival in the observation well. Publication Database GFZ (GFZ German Research Centre for Geosciences). 13916. 1 indexed citations

18.

Doğan, Mehmet, Holger Class, & Rainer Helmig. (2009). Different concepts for the coupling of porous-media flow with lower-dimensional pipe flow. Computer Modeling in Engineering & Sciences. 53(3). 207–234. 3 indexed citations

19.

Kühn, Michael, Stefan Peiffer, Holger Class, et al.. (2005). CO2Trap - Development and evaluation of innovative strategies for mineral and physical trapping of CO2 in geological formations and of long-term cap rock integrity. RWTH Publications (RWTH Aachen). 5 indexed citations

20.

Hinkelmann, Reinhard, et al.. (2000). A comparison of different model concepts for saltwater intrusion processes. IAHS-AISH publication. 385–391. 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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